Thursday, December 31, 2009

NOKIA 6760 SLIDE GAMBAR FITUR DAN HARGA
NOKIA 6760 SLIDEGAMBAR NOKIA 6760 SLIDE
NOKIA 6760 SLIDE
NOKIA 6760 SLIDE REVIEW
The Nokia 6760 slide is a device optimized for messaging with a full keyboard and support for WCDMA 900/2100 HSDPA and EGSM 850/900/1800/1900. Find directions and locations with the integrated A-GPS and included Ovi Maps. Take photos with a 3.2 megapixel camera and enjoy videos, music and graphics on the 2.4” QVGA (320 x 240) pixels), 16M color display. Additional features include Bluetooth 2.0 +EDR with Bluetooth Stereo and USB 2.0.
The 6760 slide will be available during the third quarter of 2009 for €199 (HARGA) before subsidies and taxes.

The sliding mechanism is one of the major issues that plague the Nokia 6760 slide, because it does feel cheap and wobbly. Moreover, the all-round workmanship is average. All materials the phone is made of are pleasing to touch, but the handset itself doesn’t come in solid and reliable, something not typical the manufacturer.The top side of the Nokia 6760 slide hosts 2.5mm jack and charger port, while the microUSB connector is on the left. The phone comes boxed with the respective accessories – headset, charger, USB cable, user guide and 2GB microSD card that should be inserted into the slot under the back panel.

Nokia 6760 Slide Features

  • Integrated full-focus 3.2-megapixel camera takes pictures and videos
  • Mobile email supports up to 10 accounts from popular service providers with push email and Nokia Email service
  • Instant messaging services to email and share content at the same time
  • With built-in A-GPS and Nokia Maps, users can get 3D, terrain and satellite maps to find places, events and locations (Premium navigation services require a valid navigation licence)
  • See the Web, play games and view media clearly on the 2.4-inch display in either landscape or portrait mode
Specifications
General 2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 2100
Announced 2009, July
Status : Available. Released 2009, October
Size Dimensions: 97.5 x 57.9 x 15.5 mm, 78.5 cc
Weight: 123.9 g
Display : Type TFT, 16M colors
Size: 320 x 240 pixels, 2.4 inches
- Full QWERTY keyboard
- Accelerometer sensor for auto-rotate
- Turn-to-mute
Sound Alert types Vibration; Downloadable polyphonic, MP3 ringtones
Speakerphone Yes
- 2.5 mm audio jack
Memory Phonebook 1000 entries, Photocall
Call records Detailed, max 30 days
Internal 120 MB storage
Card slot microSD, up to 16GB, 2GB included, buy memory
Data GPRS Class 32
EDGE Class 32
3G HSDPA, 3.6 Mbps
WLAN: No
Bluetooth :Yes, v2.0 with A2DP
Infrared port No
USB : Yes, v2.0 microUSB
Camera : Primary 3.15 MP, 2048x1536 pixels, enhanced fixed focus
Video : Yes, QVGA @ 15fps
Secondary : Yes

Wednesday, December 30, 2009

GAMBAR SPESIFIKASI DAN HARGA NOKIA 6730 CLASSIC
NOKIA 6730 CLASSICGAMBAR NOKIA 6730 CLASSIC
NOKIA 6730 CLASSIC
REVIEW AND SPECIFICATIONS
The Nokia 6730 classic is a quad-band GSM mid-level phone with 3G support and will be an exclusive for Vodafone. It runs on Symbian S60 3rd Edition, has an integrated A-GPS and a 3.2-megapixel camera that can capture VGA videos.

Nokia’s first name starts with the number 6 is a serious product for the primary purpose of the business office. But not so for the 6730 Classic. This product brings all the features into it with a measure that can be practically equivalent. Includes multimedia features that are not home raised. There are 3.2 megapixel camera. Although still use CMOS sensor, this camera is equipped with the latest features. Including flashing lights and a number of professional camera settings. Without the presence of auto focus. The result can be seen in the picture below. Not bad, almost any angle can be captured with the focus. It’s just for indoor photos, the result depends on the amount of light falling on the object. Because if you rely on the flash, the result is not so good. To record a video, this camera has a performance under the products N-series Nokia. The reason is able to record video in MP4 format has only a maximum framerate of 15 fps (frames per second) although the resolution is VGA.

In addition to our camera can get a special music player Nokia and Real Player as a typical S60 phone. Both players multimedia files are working together to play different formats, including: mp4, 3gp, RealVideo 8/9/10, mp3, wma, aac, eAAC, eAAC +, MIDI, WAV.

6730 Classic is equipped with means of connection is fairly complete. To browse the internet for example, this phone has a modem with HSDPA. This means that existing high-speed data lines up to 10.2 Mbps (download) and 2 Mbps (upload). This means that existing real-speed data lines it will depend on the availability of operator services. Where until now still in about 3.2 mbps.

Congenital browser related, it had nothing to complain about. It’s just because the screen size is not big enough, for some people, do browse through this phone will feel uncomfortable.

While other means of connection are available, including a Bluetooth that supports A2DP and data cable. There is no WiFi connection on this phone, naturally, in accordance with the price.

Feature that is not less important that 6730 classic is owned by GPS. Not only have the internal receiver, but the navigation feature “turn by turn” we can use. Although only differ in the licensing policy, the Nokia maps and navigation features in this 6730 is better than the navigation feature trial version for 6 months which was held mobile phones Nokia new.

This feature can lead us towards the destination location map view 2-dimensional or 3 dimensional, complete with voice navigator in ‘real time’. There is no guiding voice delay when tried in Tangerang-Jakarta trip. Voice Navigator comes right at the point where we must turn so that we no longer see the digital map on the phone.

In accordance with the recent mobile trends, and in line with the data path has been prepared, a number of online features can be found here. There are search facilities are reinforced by a Google search, email either mail or e-mail Ovi other semi push, music search, music store, and so on.

In addition, we also buy, install and play N-Gage games in the 6730 classic. Even with Java MIDP 2.0 technology that has a powerful virtual machine, then almost all java applications and games can be installed and played well. But remember, adjust the screen resolution. Beyond the capabilities of this OS is capable of executing a number of applications Symbian S60 3rd Edition.

Tuesday, December 29, 2009

GAMBAR FITUR DAN HARGA Nokia 5030 XpressRadio
Nokia 5030 XpressRadioGAMBAR Nokia 5030 XpressRadio
Nokia 5030 XpressRadio
Nokia 5030 XpressRadio REVIEW AND SPECIFICATION
The Nokia 5030 XpressRadio allows you to tune into radio instead of playing tracks, that is why it’s priced much cheaper than the former two models. It comes in the form of a candy bar, priced (HARGA) at EUR40 only before subsidies and taxes and will go on sale in this summer. The 5030 XpressRadio should also come with a loud speaker, which eliminates the need of headphones while listening to your radio.
Nokia 5030 is the company's first phone with an internal FM radio antenna, which eliminates the need for a headset or external speakers. The one touch FM radio and channel selection keys on the side of the Nokia 5030 cell phone ensure the product lives up to its XpressRadio name. Placed sideways on the table, the Nokia 5030 phone doubles as a portable FM radio and is ideal for emerging markets, where people rely on a radio as their main source of entertainment and news. The Nokia 5030 ExpressRadio has up to a day of listening time and 10 hours of talk time, which comes to life with the powerful loudspeaker, and is available in 2 colors: graphite & red.

The Nokia 5030 Xpress Radio has a superb listening time capacity and functions towards providing up to 10 hours of talktime. It is available with the powerful loud speaker and available in two eye catching colors namely; graphite and red.

The phone epitomizes simplicity and still functions towards providing the best of features to the consumer. It is equipped by a 1.8” 128 x 160 pixel TFT display, 2.5mm audio socket, a flashlight, a built in loud speaker and mp3 grade ringtones.

Weighing only 82 grams, the phone provides all that’s required by a consumer when it comes to mobile communication requirements.

The 1.8” TFT screen tends to display awesome 65,000 colors.

Last but not the least, Nokia 5030 Xpress Radio is a perfect way to enjoy music as well as avail the best of mobile communication features.

Specification and Fitur
General 2G Network GSM 900 / 1800
GSM 850 / 1900
Announced 2009, March
Status Available. Released 2009, June
Size Dimensions 108 x 45 x 15 mm, 62 cc
Weight 82 g
Display Type TFT, 65K colors
Size 128 x 160 pixels, 1.8 inches
Sound Alert types Vibration, MP3
Speakerphone Yes
- Dedicated radio keys
- 2.5 mm audio jack
Memory Phonebook 500 entries
Call records 20 dialed, 20 received, 20 missed calls
Internal 8 MB
Card slot : No
Data GPRS : No
EDGE: No
3G :No
WLAN :No
Bluetooth :No
Infrared port :No
USB: No
Camera :No
Features Messaging :SMS
Browser :No
Radio Stereo FM; built-in antenna
Games Yes
Colors Red, Graphite
GPS : No
Java :No
- Flashlight
- T9
Battery: Standard battery, Li-Ion 1020 mAh (BL-5C)

Monday, December 28, 2009

NOKIA 3710 FOLD,GAMBAR HARGA DAN SPESIFIKASI
NOKIA 3710 FOLDGAMBAR NOKIA 3710 FOLD
NOKIA 3710 FOLD
Nokia 3710 fold REVIEW AND SPESIFIKASI
A little tip to Nokia: don’t bother announcing stuff like this at the exact same time as monsters like the E72, because we assure you that no one’s going to care. That’s a shame, too, because Nokia 3710 fold is a surprisingly well-equipped phone for the €140 Nokia will be asking for it (about $193) unlocked when it launches in the fourth quarter of the year — on top of the standard Series 40, AGPS, stereo Bluetooth, FM radio, and concealed external display, you’ve also got a full 3.2 megapixels of photographic power and 3G.The Nokia 3710 fold is a flip form factor cheap mobile phone that gives best of feature and style. The Nokia 3710 fold supports GSM 850 / 900 / 1800 / 1900 on 2G network and UMTS 850 / 1900 / 2100 on 3G network. The 3710 fold is based on Series 40 backbone and comes with support for Ovi Store. The basic aim of Nokia is to provide mobile internet experience to the newly growing. The Nokia 3710 fold is equipped with a 2.2 inch screen that is 320 pixels tall, 240 pixels wide, and displays 16.7 million colors, and this handset also has a second display on the front measures 1.36 inches across, is black and white, and has a resolution of 160 x 128. This cell phone is equipped with a 3.2 mega pixel camera with auto focus and LED flash and has a microSD card slot option which can be extended up to 8 GB. Nokia Maps are pre-installed in Nokia3710 fold and an internal GPS will let you use turn-by-turn or pedestrian navigation features. The Nokia 3710 fold will be available by the fourth quarter of 2009 for $194 (HARGA).

Specification
Phone dimension: 89 x 47 x 15.2 mm, 54 cc
Phone weight: 94 g
Phone color: Pink, Plum, Black
Battery: Standby Up to 288
Talk time Up to 4 h
2G network: GSM 850 / 900 / 1800 / 1900
3G network: UMTS 850 / 1900 / 2100
Browser: WAP 2.0/xHTML, HTML
GPRS: Class 32, 88 kbps
Messaging: SMS, MMS, Email and IM
Display size: 240 x 320 pixels, 2.2 inches
- Second external monochrome TFT display, 128 x 160 pixels
Screen type: TFT, 16M colors
Camera: 3.2 MP, 2048×1536 pixels, LED flash + secondary VGA video call camera
Card slot: microSD (TransFlash), up to 8GB
- 70 MB
EDGE: Class 32, 296 kbits
HSCSD: No
USB: Yes, v2.0 microUSB
3G: Yes, 384 kbps
WLAN: No
Bluetooth: Yes, v2.0 with A2DP
Infrared port: No
Ring tones: Downloadable polyphonic, MP3 ringtones
Vibration: Yes
Games: Yes
Phone book: 2000 entries, Photocall
Call records: 20 dialed, 20 received, 20 missed calls
GPS: Yes, with A-GPS support
FM Radio: Stereo FM radio with RDS
Java MIDP 2.0
MP3/AAC/AAC+/eAAC+/WMA player
MPEG-4 player
T9
Voice command/dial/memo
Nokia Maps for S40
Standard battery, Li-Ion 860 mAh (BL-4S)

Saturday, December 26, 2009

Rangkaian Power Amplifier 2000 Watt

Power amplifier circuit provides berukut Capable up to 2000W peak power and a minimum of 1500W continuous, it has to be said that this amplifier will blow up any speaker connected to it. Regardless of the claimed power that can handle various drivers, they can not. To put this whole issue into perspective, take the most powerful and robust drivers you can (8 ohms), and connect it directly to the 110V mains (I recommend this as a 'thought experiment', rather than actually doing it!). 110V RMS into 8 ohms is 1500 W. How long would you expect the speaker to last? Most will be toast within perhaps 30 seconds or less! A very few will last slightly longer, but none will take that level of abuse for more than a few minutes.
Skema Rangkaian Power Amplifier 2000 Watt

Note:

It is imperative that Q5 (the bias servo transistor) is mounted on the heatsink, in excellent thermal contact. This is because, unlike most of my other designs, this amp uses conventional Darlington output configuration. It is necessary to use a Darlington arrangement (or a low power Darlington transistor as shown) for Q5 to ensure that the bias remains at a safe value with temperature. There is probably good cause to model and test this aspect of the design very carefully, because it is so important. The arrangement as shown will reduce quiescent current at elevated temperatures. For example, if total Iq at 24°C is 165mA, this will fall to ~40mA at 70°C. This is probably fine, because there is some delay between the a power 'surge' and the output transistors transferring their heat to the bias servo via the heatsink.

The circuit is completely conventional, using a long tailed pair input stage, direct coupled to the VAS. No current mirror was used for the LTP, as this increases open loop gain and may give rise to stability issues. In a very high power amp, stability is paramount. The amp must never oscillate under any normal load condition, because the heat created can cause almost instant transistor failure.

The power supply needed for an amp of this size is massive. Grown welding machines will look at it and cry. For intermittent operation, you need a minimum of a 1000VA transformer (or 1500VA for the 2000W version), and it will have to be custom made because of the voltages used. If you expect to run the amp at continuous high power, then transformers should be 2kVA and 3000VA respectively. Filter capacitors will pose a problem - because you need caps rated for 150V, these will be hard to find. Because high voltage high value caps can be difficult to find, it may be necessary to use two electros in series for each capacitor location. This is the arrangement shown. You must include the resistors in parallel - these equalise the voltage across each capacitor so that they have the same voltage. Remember to verify the ripple current rating! This can be expected to be over 10A, and under-rated capacitors will blow up.



Another difficulty is the bridge rectifier. Although 35A bridges would seem to be adequate, the peak repetitive current is so high that they may not be up to the task. I suggest that you use two (or even three) in parallel as shown. The bridge rectifier voltage rating should be a minimum of 400V, and they must be mounted on a substantial heatsink.

WARNING

This project describes an amplifier, power supply and tests procedures that are all inherently dangerous. Nothing described in this article should even be considered unless you are fully experienced, know exactly what you are doing, and are willing to take full 100% responsibility for what you do. There are aspects of the design that may require analysis, fault-finding and/or modification


Source

Friday, December 25, 2009

HARGA GAMBAR DAN SPESIFIKASI NOKIA E72
NOKIA E72GAMBAR NOKIA E72
NOKIA E72
NOKIA E72 REVIEW AND SPECIFICATION
The all new Nokia E72 boasts a host of new features including optical scrolling and a five-megapixel camera. Building on the success of the E71, the E72 takes the very best of Nokia’s most successful QWERTY device and makes it even better. The super-slim 10mm frame has been refined with some sleek design touches and inside the device is treated to a range of user interface improvements too.

The optical navigation key makes scrolling through emails a breeze and also helps bounce around the menus quickly and easily. The camera has been upgraded to a full five megapixels and heavy data users will love the support for up to 10.2Mbps connections over HSDPA. The audio jack has also had the upgrade treatment with 3.5mm jack now appearing on the top of the device.

Nokia Messaging is also on board (with a lifetime license) and now supports access and easy set up for Instant Messaging accounts including Yahoo! Messenger, Google Talk and Ovi, amongst others. Email set up is even easier than before through Nokia Messaging, Mail for Exchange and IBM Lotus Notes Traveler.

“The research shows that people are spending an average of five full days per year - equivalent to a full work week - responding to emails. Half of us (46 percent) choose email over voice or text to send and receive important information. The Nokia E72 was designed exactly with this kind of person in mind - it allows the owner to be more responsive and communicate how they want, whenever they want and wherever they are,” Nokia Vice President Ukko Lappalainen commented on the research.

Price (HARGA) : Rp 4.450.000,00-Rp 4.600.000,00
Size

* Form: Monoblock with full keypad
* Dimensions: 114 x 58.3 x 10.1 mm
* Weight: 128 g
* Volume: 65 cc
* Contemporary design with fully integrated QWERTY keypad

Photography

* 5 megapixel camera (2592 x 1944 pixels) with autofocus and flash
* Image formats: JPEG, Exif
* CMOS sensor
* 5x digital zoom
* One-touch autofocus key
* Focal length: 4.7 mm
* Focus range: 10 cm to infinity
* LED flash
* Flash modes: Automatic, On, Off, Red-eye reduction
* Flash operating range: 1 m
* Automatic, sunny, cloudy, incandescent, fluorescent
* Automatic, Manual exposure compensation +2,0 ~ -2,0
* Capture modes: Still capture mode, video mode, panorama mode and sequence mode
* Scene modes: Auto, user defined, close-up, portrait, landscape, sport, night mode (w/o flash), night portrait
* Colour tone modes: Normal, sepia, black & white, vivid, negative
* Light sensitivity modes: Automatic, low, medium, high
* Show viewfinder grid
* Still image editor

Monday, December 21, 2009

NOKIA 5530 XpressMusic HARGA SPESIFIKASI DAN GAMBAR
Nokia 5530 XpressMusicGAMBAR NOKIA 5530 XpressMusic
Nokia 5530 XpressMusic
NOKIA 5530 XpressMusic REVIEW AND SPECIFICATION
As far as we're concerned, Nokia's 5530 XpressMusic far and away out-classes its more expensive older brother the 5800, even if it is lacking in the 3G department. British phone retailer mobiles.co.uk thought it best to tease us with an unboxing video of their own, along with some quick impressions of the touchscreen device. It's certainly a looker, and a sleek device they're pretty confident will do well. Some of the S60 5th edition additions are very welcomed, such as the new scrolling contacts bar, but for better and for worse (mostly worse), it's still S60. See it for yourself after the break, and if you wish really hard, there's a good chance this still won't get 3G, but at least you can say you tried.

It's a phone not too dissimilar to the 5800 XpressMusic in shape, albeit slightly smaller with a 2.9-inch screen. It feels lightweight and the screen is noticeably smaller than other touchscreen offerings, but it doesn't feel too tiny for a touchscreen, although it's probably on the edge of what's acceptable.

It should be pointed out that this is Nokia's budget offering, coming in at a price of £129.99 from the Carphone Warehouse, and therefore some compromises will have been made to shrink the cost of the phone down while maintaining a lot of the feel of its bigger brother, the 5800 XpressMusic.
The top houses the on/off switch, which is quite small and seems a little lonely all alone on the face - but perhaps it's being punished by Nokia for some misdemeanour on a lowly S40 device, as it's usually accompanied by a USB socket and/or a 3.5 mm jack.

The front of the Nokia 5530 XpressMusic also holds a number of touch sensitive keys, namely call and terminate options, a menu button and a media button located at the top which calls up elements of the phone like pictures, video and music on a drop-down menu. This touch sensitive element requires a bit of a poke to get working, but that's still miles better than the 'breathe and you'll hit it' touch sensitive buttons on the LG GD900 Crystal.

Nokia has also deigned to give us a 3.2MP camera with single LED flash on the rear of the 5530 XpressMusic, although this is a basic mobile photography effort with no sign of the Carl Zeiss that adorn the N-series handset cameras.The front also has a stainless steel finish (although you have to peer closely to realise it) and houses two speakers for stereo output, which work quite well and will be looked at in more detail in the media section
Price(HARGA) : Rp.2.850.000 (US $285.00)

Specification


* 2G Network GSM 850 / 900 / 1800 / 1900
* Announced 2009, June
* Released 2009, August
* Size Dimensions 104 x 49 x 13 mm, 68 cc
* Weight 107 g
* Display Type TFT resistive touchscreen, 16M colors, size 360 x 640 pixels, 2.9 inches
* Proximity sensor for auto turn-off
* Accelerometer sensor for auto-rotate
* Handwriting recognition
* Sound Alert types Vibration; polyphonic, MP3 ringtones
* Speakerphone Yes, with stereo speakers
* 3.5 mm audio jack
* Memory Phonebook Practically unlimited entries and fields, Photocall
* Call records Detailed, max 30 days
* Internal 70 MB storage, 128 MB SDRAM
* Card slot microSD (TransFlash), up to 16GB, 4GB included
* Data GPRS Class 32
* HSCSD Yes
* EDGE Class 32
* 3G No
* WLAN Wi-Fi 802.11 b/g
* Bluetooth Yes, v2.0 with A2DP
* Infrared port No
* USB Yes, v2.0 microUSB
* Camera Primary 3.15 MP, 2048×1536 pixels, autofocus, LED flash
* Video Yes, VGA@30fps (verified)
* Secondary No
* Features OS Symbian OS v9.4, Series 60 rel. 5
* CPU ARM 11 434 MHz processor
* Messaging SMS, MMS, Email, Instant Messaging
* Browser WAP 2.0/xHTML, HTML, RSS feeds
* Radio Stereo FM radio with RDS
* Games Yes
* Colors Red on black, Blue on white, Grey on black, Pink on white, Yellow on white
* GPS No
* Java Yes, MIDP 2.0
* WMV/RV/MP4/3GP video player
* MP3/WMA/WAV/RA/AAC/M4A music player
* Voice command/dial
* T9
* Photo editor
* Battery Standard battery, Li-Ion 1000 mAh(BL-4U)
* Stand-by Up to 336 h
* Talk time Up to 4 h 54 min
* Music play Up to 27 h

Strength

* Wide display, TFT touchscreen
* Symbian OS v9.4 OS, Series 60 rel. 5
* 3.15 MP camera, 2048×1536 pixels, autofocus
* Great video (30 fps)
* 3.5 mm audio output jack
* FM Radio

Weakness

* No 3G HSDPA
* No WLAN
* No secondary videocall camera
* No GPS
* No TV out
* Not long Baterry life for internet using
* No QWERTY keyboard
* Camera LED flash (xenon flash will be better)

Tuesday, December 15, 2009

Rangkaian TL072 Audio Power Amplifier

This TL072 power amplifier circuit providing an ac voltage gain of 4, in order to drive less sensitive power amplifiers. As modern Hi-Fi home equipment is frequently fitted with small loudspeaker cabinets, the bass frequency range is rather sacrificed. This circuit features also a bass-boost, in order to overcome this problem. You can use a variable resistor to set the bass-boost from 0 to a maximum of +16dB @ 30Hz. If a fixed, maximum boost value is needed, the variable resistor can be omitted and substituted by a switch.

Rangkaian TL072  Audio Power AmplifierSkema Rangkaian TL072 Audio Power Amplifier

Note:
  • A log type for P2 ensures a more linear regulation of bass-boost.
  • Please note that, using SW1, the boost is on when the switch is open, and off when the switch is closed.

List Component:
P1_________________10K Log.Potentiometer
P2________________100K Log.Potentiometer
R1,R2_____________100K 1/4W Resistors
R3,R6______________15K 1/4W Resistors
R4_________________10K 1/4W Resistor
R5_________________22K 1/4W Resistor
R7__________________1K 1/4W Resistor
R8________________560R 1/4W Resistor
C1,C2,C5____________2µ2 63V Electrolytic Capacitors
C3________________470µF 35V Electrolytic Capacitor
C4__________________1µF 63V Polyester Capacitor
C6_________________47nF 63V Polyester Capacitor
C7_________________22µF 25V Electrolytic Capacitor
IC1_______________TL072 Dual BIFET Op-Amp

Rangkaian 12 Volt Audio Amplifier

This circuit power amplifier was deliberately designed using no ICs and in a rather old-fashioned manner in order to obtain good harmonic distortion behavior and to avoid hard to find components. The amplifier(s) can be conveniently supplied by a 12V wall plug-in adapter. Closing SW1 a bass-boost is provided but, at the same time, volume control must be increased to compensate for power loss at higher frequencies. In use, R9 should be carefully adjusted to provide minimal audible signal cross-over distortion consistent with minimal measured quiescent current consumption; a good compromise is to set the quiescent current at about 10-15 mA.To measure this current, wire a DC current meter temporarily in series with the collector of Q3.

Rangkaian 12 Volt Audio AmplifierSkema Rangkaian 12 Volt Audio Amplifier

List Component

P1_____________10K Log.Potentiometer
R1,R2__________33K 1/4W Resistors
R3_____________33R 1/4W Resistor
R4_____________15K 1/4W Resistor
R5,R6___________1K 1/4W Resistors
R7____________680R 1/4W Resistor
R8____________120R 1/2W Resistor
R9____________100R 1/2W Trimmer Cermet
C1,C2__________10µF 63V Electrolytic Capacitors
C3____________100µF 25V Electrolytic Capacitor
C4,C7_________470µF 25V Electrolytic Capacitors
C5_____________47pF 63V Ceramic Capacitor
C6____________220nF 63V Polyester Capacitor
C8___________1000µF 25V Electrolytic Capacitor
D1___________1N4148 75V 150mA Diode
Q1____________BC560C 45V 100mA PNP Low noise High gain Transistor
Q2____________BC337 45V 800mA NPN Transistor
Q3____________TIP31A 60V 4A NPN Transistor
Q4 ___________TIP32A 60V 4A PNP Transistor
SW1___________SPST switch

The following is a circuit of 25Watt High Quality power amplifier Mosfet IRF530-IRF9530 from Motorola's transistors are employed in the preceding stages. The supply rails prudentially voltage was kept at the rather low value of + and - 32V.

Rangkaian 25Watt Audio Amplifier MosfetSkema Rangkaian 25Watt Audio Amplifier Mosfet

Note:
  • Q6 & Q7 must have a small U-shaped heatsink.
  • Q8 & Q9 must be mounted on heatsink.
  • Adjust R11 to set quiescent current at 100mA (best measured with an Avo-meter connected in series to Q8 Drain) with no input signal.
  • A correct grounding is very important to eliminate hum and ground loops. Connect to the same point the ground sides of R1, R4, R9, C3 to C8. Connect C11 to output ground. Then connect separately the input and output grounds to power supply ground.


List Component

R1,R4_________47K 1/4W Resistors
R2____________4K7 1/4W Resistor
R3____________1K5 1/4W Resistor
R5__________390R 1/4W Resistor
R6__________470R 1/4W Resistor
R7___________33K 1/4W Resistor
R8__________150K 1/4W Resistor
R9___________15K 1/4W Resistor
R10__________27R 1/4W Resistor
R11_________500R 1/2W Trimmer Cermet
R12,R13,R16__10R 1/4W Resistors
R14,R15_____220R 1/4W Resistors
R17___________8R2 2W Resistor
R18____________R22 4W Resistor (wirewound)
C1___________470nF 63V Polyester Capacitor
C2___________330pF 63V Polystyrene Capacitor
C3,C5________470µF 63V Electrolytic Capacitors
C4,C6,C8,C11_100nF 63V Polyester Capacitors
C7___________100µF 25V Electrolytic Capacitor
C9____________10pF 63V Polystyrene Capacitor
C10____________1µF 63V Polyester Capacitor
Q1-Q5______BC560C 45V 100mA Low noise High gain PNP Transistors
Q6_________BD140 80V 1.5A PNP Transistor
Q7_________BD139 80V 1.5A NPN Transistor
Q8_________IRF530 100V 14A N-Channel Hexfet Transistor
Q9_________IRF9530 100V 12A P-Channel Hexfet Transistor

Rangkaian 60watt Amplifier Mosfet IRFP240-IRFP9240

The following is a 60 - 90W High Quality power amplifier. Circuit topology is about the same of the above mentioned amplifier, but the extremely IRFP9240 Rugged IRFP240 MOSFET devices and are used as the output pair, and well Renowned high voltage Motorola's transistors are employed in the preceding stages. The supply rails prudentially voltage was kept at the rather low value of + and - 40V. For those wishing to experiment, the supply voltage rails could be raised to + and - 50V maximum, allowing the amplifier to approach the 100W into 8 Ohm target

Skema Rangkaian 60watt Amplifier Mosfet IRFP240-IRFP9240

Note:
  • A small, U-shaped heatsink must be fitted to Q6 & Q7.
  • Q8 & Q9 must be mounted on large heatsinks.
  • Quiescent current can be measured by means of an Avo-meter wired in series to the positive supply rail and no input signal.
  • Set the Trimmer R10 to its minimum resistance.
  • Power-on the amplifier and adjust R10 to read a current drawing of about 120 - 130mA.
  • Wait about 15 minutes, watch if the current is varying and readjust if necessary.


List Component:

R1______________47K 1/4W Resistor
R2_______________4K7 1/4W Resistor
R3______________22K 1/4W Resistor
R4_______________1K 1/4W Resistor
R5,R12,R13_____330R 1/4W Resistors
R6_______________1K5 1/4W Resistor
R7______________15K 1/4W Resistor
R8______________33K 1/4W Resistor
R9_____________150K 1/4W Resistor
R10____________500R 1/2W Trimmer Cermet
R11_____________39R 1/4W Resistor
R14,R15___________R33 2.5W Resistors
R16_____________10R 2.5W Resistor
R17_______________R22 5W Resistor (wirewound)
C1_____________470nF 63V Polyester Capacitor
C2_____________470pF 63V Polystyrene or ceramic Capacitor
C3______________47µF 63V Electrolytic Capacitor
C4,C8,C9,C11___100nF 63V Polyester Capacitors
C5______________10pF 63V Polystyrene or ceramic Capacitor
C6_______________1µF 63V Polyester Capacitor
C7,C10_________100µF 63V Electrolytic Capacitors
D1___________1N4002 100V 1A Diode
D2_____________5mm. Red LED
Q1,Q2,Q4_____MPSA43 200V 500mA NPN Transistors
Q3,Q5________BC546 65V 100mA NPN Transistors
Q6___________MJE340 200V 500mA NPN Transistor
Q7___________MJE350 200V 500mA PNP Transistor
Q8___________IRFP240 200V 20A N-Channel Hexfet Transistor
Q9___________IRFP9240 200V 12A P-Channel Hexfet Transistor

Monday, December 14, 2009

GAMBAR HARGA DAN SPESIFIKASI NOKIA 6790 SURGE
NOKIA 6790 SURGEGAMBAR NOKIA 6790 SURGE
NOKIA 6790 SURGE

The Nokia 6790 Surge is a device optimized for messaging with a full keyboard and support for WCDMA 850/1900 HSDPA and EGSM 850/900/1800/1900. Find directions and locations with the integrated A-GPS and AT&T Navigator. Take photos with a 2 megapixel camera and enjoy videos, music and graphics on the 2.4” QVGA (320x 240 pixels) 16M color display. Additional features include Bluetooth 2.0 +EDR with Bluetooth Stereo and USB 2.0.
Before seeing it in person, the Nokia 6790 Surge just had a look that made it stand out and enticing. Those feelings quickly subsided as we noticed the almost cheap feel of the design. It's kind of hard gauging which way to hold the phone at first – we wonder which orientation the designers built the phone around. The glossy plastic used throughout just attracts finger prints and leaves us with a sense of inferior materials. The top portion of the phone with the screen is relatively thin while the body housing the QWERTY is almost three times as thick. It's wider (2.28”) when comparing it to similar side-sliding devices. Luckily it won't drag you down because of the lightweight (4.38 oz) feel in the pockets – the plastic casing is responsible for that. We're definitely afraid of even slightly dropping the device because it feels a bit on the fragile side.

For the most part, the 2.4” LCD screen dominates the front with it's ability to display 16 million colors. Although it has a resolution of 240x320 pixels, it just does not look quite as sharp as we hoped for. Even the colors seemed a bit of the drab side and doesn't jump out enough to make it stand out. The outdated look of the interface is partly to blame for the Surge's screen quality taking a dive. Placing the brightness to the highest setting will still pose a problem when attempting to view it in direct sunlight – making it difficult to see what you're doing.
Sliding the phone left to right will allow you access to the spacious four row QWERTY keyboard. All the buttons are next to one another with no spacing in between – they're large enough for your thumbs to feel out and quite tactile to our taste. Dialing a phone number is annoying because it can be accomplished only by using the numeric pad on the QWERTY. Thankfully you can bypass all of that by just accessing your address book and selecting the person you want to call. The bottom row of keys could've been effectively turned into additional buttons – you find the space bar and two shift buttons taking up excessive space. The backlighting is adequate with most of the illumination emanating from the center. The QWERTY was the stand out great feature – typing away becomes natural on it.


Technical Specs
Developer Platform S60 3rd Edition, Feature Pack 2
Operating System Symbian OS v9.3
Screen Resolution 320 x 240

General
Screen Resolution 320 x 240
Screen Color Depth 24 bit
Device Size 97.6 x 58 x 15.6 mm
Volume 78.5 cc
Weight 124.3 g
Keypad Slide-out QWERTY Keyboard
Other Keys 3 Labeled Soft Keys
5-way Scrolling
Browser Key
Camera Key
Menu Key
Messaging Key
Volume Keys
Frequency Bands GSM 1800
GSM 1900
GSM 850
GSM 900
WCDMA 1900
WCDMA 850
Data Bearers EGPRS
HSDPA
WCDMA

Connectivity
Local Connectivity 2.5mm Universal Headset Connector
Bluetooth 2.0 +EDR
Bluetooth Stereo Audio
MTP (Multimedia Transfer Protocol)
Nokia microUSB Cable CA-101
USB 2.0
Bluetooth Profiles A2DP, AVDTP, AVRCP, BIP, BPP, DUN, FAX, FTP, GAP, GAVDP, GOEP, HFP, HID, HSP, OPP, PBAP, SAP, SDAP

Multimedia
Camera Resolution 1600 x 1200
CMOS Sensor 2.0 Megapixel
Camera Digital Zoom 4 x
Camera Image Formats JPEG/Exif
Camera Features Full Screen Viewfinder, Self Timer, Sequence Mode
Video Recording Resolution 320 x 240
Video Recording Frame Rate 15 fps
Video Digital Zoom 4 x
Video Recording Formats H.263, MPEG-4
Video Features Video Player
Video Recorder
Video Sharing
Video Streaming
Video Playback Formats 3GPP formats (H.263), H.264/AVC, MPEG-4, RealVideo 7,8,9/10, WMV 9
Graphic Formats BMP, EXIF, GIF87a, GIF89a, JPEG, JPEG 2000, OTA, PNG, WBMP
Audio Features Audio Equalizer
Audio Recorder AMR
Audio Streaming
Music Player
Audio Formats AAC, AAC+, AMR-NB, AMR-WB, AU, eAAC+, M4A, MIDI Tones (poly 64), Mobile XMF, MP3, MP4, RealAudio 7, 8, 10, RMF, SP-MIDI, True tones, WAV, WMA, WVE

Sunday, December 13, 2009

HARGA|GAMBAR|SPESIFIKASI NOKIA 5800 NAVIGATION EDITION
NOKIA 5800 NAVIGATION EDITION GAMBAR NOKIA 5800 NAVIGATION EDITION
NOKIA 5800 NAVIGATION EDITION
NOKIA 5800 NAVIGATION EDITION REVIEW AND SPECIFICATION
Nokia has unveiled a freshly tuned version of its debut touchscreen device, in the shape of the new Nokia 5800 Navigation Edition. Slated to saunter into pockets in the third quarter of 2009, this innovative incarnation of the 5800 comes pre-loaded with a lifetime of voice-guided Drive and Walk navigation licenses for your region.

Keenly tailored for taking you to where you need to be with minimal fuss, the 5800 Navigation Edition comes with all your guidance software set up, and as it comes with an in-box car charger and Nokia car kit, it has been designed to become your satnav savvy passenger in seconds.

The key to the amazing sales of 5800 is the good feature set along with competitive pricing. While the iPhone appeals to the pro users, Nokia is all for the masses. Aggressive marketing in Asian markets has helped Nokia achieve this milestone.

5800 scored over iPhone 3G again with basic things like Sms forwarding, Bluetooth transfer, handwriting recognition, video recording etc in place. At this rate Nokia would sell 12 million 5800 by year end – this would give the iPhone a serious run for its money. Apple recently announced that they have sold 17 million iPhones till date. Thats roughly a million a month.

General 2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 2100
HSDPA 850 / 1900 - American version
Announced 2009, August
Status Available. Released 2009, October
Size Dimensions 111 x 51.7 x 15.5 mm, 83 cc
Weight 109 g
Display Type TFT resistive touchscreen, 16M colors
Size 360 x 640 pixels, 3.2 inches
- Proximity sensor for auto turn-off
- Accelerometer sensor for auto-rotate
- Handwriting recognition
Sound Alert types Vibration; Downloadable polyphonic, MP3 ringtones
Speakerphone Yes, with stereo speakers
- 3.5 mm audio jack
Memory Phonebook Practically unlimited entries and fields, Photocall
Call records Detailed, max 30 days
Internal 81 MB storage, 128 MB RAM
Card slot microSD, up to 16GB, 8GB included, buy memory
Data GPRS Class 32
EDGE Class 32
3G HSDPA, 3.6 Mbps
WLAN Wi-Fi 802.11 b/g, UPnP technology
Bluetooth Yes, v2.0 with A2DP
Infrared port No
USB Yes, v2.0 microUSB
Camera Primary 3.15 MP, 2048x1536 pixels, Carl Zeiss optics, autofocus, LED flash
Video Yes, VGA 30fps
Secondary Videocall camera
Features OS Symbian OS v9.4, Series 60 rel. 5
CPU ARM 11 434 MHz processor
Messaging SMS, MMS, Email, Instant Messaging
Browser WAP 2.0/xHTML, HTML, RSS feeds
Radio Stereo FM radio with RDS
Games Yes + Java downloadable
Colors Chrome, Black
GPS Yes, with A-GPS support; Nokia Maps 2.0 Touch
Java Yes, MIDP 2.1
- Regional maps
- Lifetime pedestrian and vehicle voice-guided navigation licenses
- Car mount and car charger in retail package
- WMV/RV/MP4/3GP video player
- MP3/WMA/WAV/RA/AAC/M4A music player
- Document viewer (Word, Excel, PowerPoint)
- Photo editor
- Voice command/dial
- Flash Lite 3.0
- TV-out
- T9
Battery Standard battery, Li-Ion 1320 mAh(BL-5J)

Friday, December 11, 2009

NOKIA 5230 GAMBAR|HARGA|SPESIFIKASI
NOKIA 5230GAMBAR NOKIA 5230
NOKIA 5230
NOKIA 5230 SPECIFICATION AND REVIEW
Nokia seems to be releasing a lot of new products this week, we have already seen the Nokia Booklet 3G and the Nokia 5800 Navigation Editon, today they have announced another new mobile phone, the Nokia 5230.

The Nokia 5230 is an entry level touchscreen mobile phone, with a 3.2 inch touchscreen with a resolution of 640 x 360, it also features a 2 megapixel camera, which can record video at 30fps.

The Nokia 5230 has made a bright and breezy appearance this morning, and judging by the array of colours on offer, Nokia has been spending a lot of time pondering the Pantone chart. This Symbian S60 smartphone is very much in keeping with other touchscreen phones, having a stylish design with an emphasis on music and movies, as well as staying permanently connected.
The Nokia 5230 is a 3.2-inch touchscreen device that apparently comes with a full-screen ’soft’ QWERTY keyboard, as well as the new Homescreen we first saw on the Nokia 5530 XpressMusic. This means you’ll be able to load four of your favourite apps straight from the homescreen, including the likes of Facebook and YouTube.

It also comes with the same Contacts bar that allows you to add up to 20 contacts with pictures and scroll between them. You’ll find a super-fast HSDPA connection for getting access to email and the internet and with a claimed 33 hours of playback from the media player, this is very much a device for music lovers out there.

Network : 2G GSM 850 / 900 / 1800 / 1900, 3G HSDPA 900 / 2100
Size/Model : 111 x 51.7 x 15.5 mm, 83 cc, 115 g / candybar
Display : TFT, 16M colors, 360 x 640 pixels, 3.2 inches,teknologi Resistive touchscreen, Proximity sensor for auto turn-off , Accelerometer sensor for auto-rotate, Handwriting recognition
OS : Symbian OS v9.4, Series 60 rel. 5
Camera : 2 MP, 1600x1200 pixels, Video VGA@30fps, video call kamera ke-2(VGA)
Connectivity : GPRS Class 32, HSCSD, EDGE Class 32, HSDPA, 3.6 Mbps, Bluetooth v2.1 with A2DP, USB v2.0 microUSB
Memory : Internal 70 MB storage, microSD (TransFlash), up to 16GB
Aplikasi : WAP 2.0/xHTML, HTML, RSS feeds, Java, MIDP 2.0
Feature lain:
- Stereo FM radio with RDS
- A-GPS support; Nokia Maps 2.0 Touch
- WMV/RV/MP4/3GP video player
- MP3/WMA/WAV/RA/AAC/M4A music player
- Voice command/dial
- Document viewer (Word, Excel, PowerPoint)
- Photo editor
- T9
Prices (HARGA) about 259 Euro

GAMBAR SPESIFIKASI DAN HARGA NOKIA 1616
NOKIA 1616
GAMBAR NOKIA 1616
NOKIA 1616
NOKIA 1616 REVIEW AND SPECIFICATION
Nokia Life Tools will be available across Indonesia from early December 2009, with the Agriculture service available for Java and Sumatra at the first stage, and Education and Entertainment services available nation-wide. Consumers will be able to subscribe to Agriculture, Education and Entertainment information and content. Nokia is collaborating with the Ministry of Agriculture (Departemen Pertanian Republik Indonesia), the Center of Meteorology, Climatology and Geophysics (BMKG), Synovate and other industry partners to bring valuable agriculture information, prices, news and tips directly to consumers.
Priced (HARGA) at EUR 24 (before taxes and subsidies), the Nokia 1616 supports FM radio, prepaid tracker, flashlight, anti-scratch cover and dust-resistant keymat, among other features. The long battery life, with up to 22 days of standby time, is vital for people in areas where access to electricity is limited. The Nokia 1616 mobile phone will start shipping in the first half of 2010.

Display


* TFT - 65K colors
* 128 x 160 pixels - 1.8 inches

Operating System
Processor
Memory

* Phonebook: 500 entries
* Call records: 20 dialed / 20 received / 20 missed calls

Network

* 2G: GSM 900 / 1800 - GSM 850 / 1900 - American version

Camera No
Video No
Sound

* Alert types: Vibration; MP3 ringtones
* Speakerphone: Yes
* 3.5mm audio jack

Dimensions 107.1 x 45 x 15 mm - 60.3 cc
Weight 78.5 g
Battery

* Standard battery - Li-Ion 800 mAh (BL-5CB)
* Stand-by: Up to 528 h
* Talk time: Up to 8 h 30 min

Features

* Exchangeable color covers
* Flashlight
* Organizer
* Voice memo
* T9

Radio FM radio
GPS No

Data
GPRS No
HSCSD No
EDGE No
3G No
Wireless No
Bluetooth No
USB No

Thursday, December 10, 2009

GAMBAR SPESIFIKASI DAN HARGA NOKIA 6788 TD-SCDMA
NOKIA 6788 TD-SCDMAGAMBAR NOKIA 6788 TD-SCDMA
NOKIA 6788 TD-SCDMA
NOKIA 6788 TD-SCDMA SPECIFICATIONS AND REVIEW
NOKIA 6788 is the first TD-SCDMA compatible mobile phone. TD-SCDMA is the China’s 3G standard, which works better than regular GSM network and yet evades licensing fees for using UMTS and HSDPA technologies. Even though Nokia 6788 is having pretty big size (105.6 x 54.9 x 18.9 mm), the features provided can cover it up.

Designed exclusively for China Mobile’s network, the Nokia 6788 provides a large range of services. As the reviews, the all-in-one device ensures its users speedy download and browsing speed. On the feature fronts, it boasts of being included with a 5-mp (2592 x1944) camera along with a 2.8-inch QVGA display, dual-LED flash and Symbian S60 platform.

Users can also make instant sharing of data through this device. Inspired by conventional Chinese architecture and furniture, the Nokia 6788 comes integrated with Chinese design elements alongside traditional Chinese designs behind the battery cover and the slide.

Olli-Pekka Kallasvo, CEO of Nokia, said that the TD-SCDMA has a leading role to play in successfully evaluating 3G in China. Built-in with a large variety of included China Mobile apps, the Nokia 6788 brings a novel stage of teamwork with China Mobile and is claimed to offer augmented experiences to China’s 3G users. More TD-SCDMA phones are also expected to be rolled out in the long run to boost this 3G standard in China.Lu Xiangdong, VP of China Mobile Communications Corporation, said that the launch of Nokia 6788 is prideful moment for them.

  • Symbian Operating System v9.3 Series 60
  • ARM 11 434 MHz processor for an outward performance
  • 4GB of internal memory which can be expanded upto 8GB via microSD TransFlash card
  • 128MB of RAM and 256MB ROM for enhancing the processing speed of the applications
  • GPS and Ovi maps for detailed guidance of the roads

GAMBAR|SPESIFIKASI|HARGA NOKIA N97 MINI
NOKIA N97 MINIGAMBAR NOKIA N97 MINI
NOKIA N97 MINI
SPECIFICATIONS AND REVIEW
Nokia N97 mini was unveiled this morning at Nokia World 09. Sporting new homescreen widgets and a host of usability improvements, the N97 mini still packs 8GB of storage, a 3.2-inch touchscreen and full QWERTY keyboard into its 14.2mm thin frame. It’s also the first Nokia device to sport Lifecasting with Ovi – a new partnership with the world’s largest social network, Facebook. The N97 mini is based on the same tilt display design of its N97 big brother, built into a smaller body complete with new design touches.Its 'Mini' moniker doesn't mean this is a heavily stripped down version of the original N97, however.

While it does pare down some elements of the N97 - such as a smaller screen and reduced internal flash memory from 32GB to 8GB - the N97 Mini is still a big hitter in the pure feature count department.

The N97 Mini is a full touchscreen smartphone device, running on Nokia's Symbian S60 5th Edition platform - previously seen on recent models like the N97 and 5800 XpressMusic.

It has a 3.2-inch display, and has a slide-out full QWERTY keyboard with a tilting screen, and, geared up to be a web-orientated multimedia device, it supports high-speed HSDPA mobile data as well as Wi-Fi connectivity.

SPECIFICATIONS OF NOKIA N97 MINI
General 2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
Announced 2009, September
Status Coming soon. Exp. release 2009, October
Size Dimensions 113 x 52.5 x 14.2 mm, 75 cc

Weight 138 g
Display Type TFT resistive touchscreen, 16M colors
Size 360 x 640 pixels, 3.2 inches
- Proximity sensor for auto turn-off
- Accelerometer sensor for auto-rotate
- Full QWERTY keyboard
- Handwriting recognition
Sound Alert types Vibration; MP3 ringtones
Speakerphone Yes, with stereo speakers
- 3.5 mm audio jack
Memory Phonebook Practically unlimited entries and fields, Photocall
Call records Detailed, max 30 days
Internal 8 GB storage, 128 MB RAM
Card slot microSD (TransFlash), up to 16GB
Data GPRS Class 32
HSCSD Yes
EDGE Class 32
3G HSDPA, 3.6 Mbps
WLAN Wi-Fi 802.11 b/g, UPnP technology
Bluetooth Yes, v2.0 with A2DP
Infrared port No
USB Yes, v2.0 microUSB
Camera Primary 5 MP, 2592x1944 pixels, Carl Zeiss optics, autofocus, Dual LED flash, video light
Features Geo-tagging
Video Yes, VGA@30fps
Secondary Yes, VGA@15fps
Features OS Symbian OS v9.4, Series 60 rel. 5
CPU ARM 11 434 MHz processor
Messaging SMS, MMS, Email, Push Email, IM
Browser WAP 2.0/xHTML, HTML, RSS feeds
Radio Stereo FM radio with RDS, Visual radio; FM transmitter
Games Yes, DJ Club Tour + downloadable
Colors Cherry Black, Garnet
GPS Yes, with A-GPS support; Nokia Maps
Java Yes, MIDP 2.1
- Digital compass
- MP3/WMA/WAV/eAAC+ music player
- WMV/RealVideo/MP4 video player
- TV-out
- Voice command/dial
- Document viewer (Word, Excel, PowerPoint, PDF)
- Video and photo editor
- Flash Lite 3
- T9
Battery Standard battery, Li-Ion 1200 mAh (BL-4D)

Wednesday, December 9, 2009

GAMBAR SPESIFIKASI DAN HARGA NOKIA X6
SPESIFIKASI HARGA NOKIA X6GAMBAR NOKIA X6
SPESIFIKASI HARGA NOKIA X6
Nokia X6 is a powerful multimedia entertainment device, combining 32GB of on-board memory with a slick 3.2" finger touch interface. The X6 is capable of playing up to 35 hours of non-stop music and comes with a 5-megapixel camera and Carl Zeiss optics, dual LED flash, as well as powereful connection.
The Nokia X6 is a ‘Comes With Music’ device, so it provides unlimited access to the Nokia Music Store. With ample on-board storage you can discover, download and keep all the music you could ever ask for.

Also perfect for people who like to snap, tag and share photos and videos. Superb image quality comes from a 5 mega-pixel camera with Carl-Zeiss optics. With its built-in features to edit videos, show them on TV or online, sharing your memories has never been easier.

The large 3.2-inch display enables you to fit 20 shortcuts onto a personalized home screen - offering one-touch access to the web, your photos, videos and music library - and favorite social networks such as Facebook, Flickr, MySpace and more.

The Nokia X6 is no slouch in the beauty stakes either, with its slim, curved-edge profile and a 16:9 widescreen interface providing a slick, finger-sensitive touch operation, optimized to give a great viewing experience.

The price (HARGA) of the Nokia X6 is expensive that is about $700.
the specifications of Nokia X6:
- GSM 850 / 900 / 1800 / 1900 HSDPA
- Camera 5 megapixel, 2592x1944 pixels, Carl Zeiss optics, autofocus, Dual LED flash, - Display screen TFT capacitive touchscreen, 16million colors 360 x 640 pixels, 3.2 inches
video light
- Dimension 111 x 51 x 13.8 mm
-Weight 122 gr
- Memory Internal 32GB storage, RAM128 MB
- 3G HSDPA, 3.6 Mbps
- Scratch-resistant glass surface - WLAN Wi-Fi 802.11 b/g
- Bluetooth 2.0 A2DP
- USB 2.0 microUSB
- Geo-tagging
- Video VGA 30fps
- Symbian OS v9.4, Series 60 rel. 5
- Processor ARM 11 434 MHz
- Colors available Blue on White, Red on Black
- GPS / A-GPS / Ovi Maps 3.0
- Java MIDP 2.0
- Battery Li-Ion 1320 mAh Stand-by about 400 hours, talk time 8 hours 30 minutes, play music up to 35 hours

Tuesday, December 8, 2009

Audio Amplifier 4 Transistor

The circuit a 4-transistor amplifier suitable for a variety of projects including receivers, intercoms, microphones, telephone pick-up coils, and general audio monitoring. The amplifier has a power isolation circuit and bandwidth limiting to reduce oscillations and “motorboating”. The values are not particularly critical and modest deviations from the indicated values will not significantly degrade the performance.

Rangkain Audio Amplifier 4 TransistorSkema Rangkain Audio Amplifier 4 Transistor



Three cell battery packs giving about 4.5 volts are recommended for most transformerless audio amplifiers driving small 8 ohm speakers. The battery life will be considerably longer than a 9 volt rectangular battery and the cell resistance will remain lower over the life of the battery resulting in less distortion and stability problems.

The amplifier may be modified to work with a 9 volt battery if desired by moving the output transistors’ bias point. Lowering the 33k resistor connected from the second transistor’s base to ground to about 10k will move the voltage on the output electrolytic capacitor to about 1/2 the supply voltage. This bias change gives more signal swing before clipping occurs and this change is not necessary if the volume is adequate.

300-Watt Audio Amplifier MJ15003 -MJ15004


When I began the design of this amp, my goal was to make a product better suited for the reproduction of complex music and voice. Although I emphasize the high electrical properties, the most important requirement is to create a superior sound, vivid images and superb spatial aural clarity.

Although the average level of listening is usually less than 10 watts, my design concept was to an amplifier with plenty of reserves, but the deviation is for Class A, at the height of the audience of cross-over distortion at a very low level. There is no place in the pathway, enhances the precision of the tonal characteristics of instruments and voices clearly. This Amplifier is virtually zero phase distortion over the audio range resolution is perfect and completely color the sound.

Audio Amplifier MJ15003 -MJ15004
Skema Rangkain 300-Watt Audio Amplifier MJ15003 -MJ15004


Amplifier Specification:
Maximum Output: 240 watts rms into 8 Ohms, 380 watts rms into 4 Ohms
Audio Frequency Linearity: 20 Hz – 20 kHz (+0, -0.2 dB)
Closed Loop Gain: 32 dB
Hum and Noise: -90 dB (input short circuit)
Output Offset Voltage: >13 mV (input short circuit)
Phase Linearity: > 13 0 (10 Hz – 20 kHz)
Harmonic Distortion: > 0.007% at rated power
IM Distortion: > .009% at maximum power
.

150-Watt Bribge Amplifier TDA 7294
This is a series of 150-watt amplifier based bribge ic TDA 7294. for SIM connections have been removed and some signs of components have been displaced. 220UF 100nF Although I have shown how C1 3.3UF Electro bipolar, you can use the CAP polyester, if you want. If power will be used for serednochastotnyh or tweeters in the system biamped or triamped, C1 may be reduced by the cost 100nF (-3dB at 72Hz). For general use, you can use a 1uF polyester, giving-3dB frequency of 7.2Hz, but bass extension is better with a higher value

150-Watt Bribge Amplifier TDA 7294
Skema Rangkain 150-Watt Bribge Amplifier TDA 7294

As you can see, there are provisions to use TDA7294 well. This circuit is almost identical, but a specification higher. There are links on the board to connect contacts 1 and 5 (it should not be connected to the TDA727). Use TDA7294, fees can run bridged (BTL or bridge tied load) to about 150 W at 8 ohms. I think P87B be used to provide phase signal is necessary for BTL operation. Although it is common to see AMP as a reversal, there is a very low resistance at first, and may lead to unacceptable pressures and possible distortion. P87B be managed separately by each amplifier, and the best way to control the amplifiers.While parallel operation is often recommended, I strongly recommend that you run the amps in parallel. There are very strict requirements for greater tolerance for parallel operation – usually amplifiers must correspond to 0.1% or more for all audio traffic and beyond. A very low output resistance of members, even inconsistencies 100mV (instantly, any voltage and frequency) can cause large amounts of current flowing through the circuits. Although 0.1Ω resistors are usually offered, inconsistencies 100mV voltage (0.15% at the peak voltage 60V) 0.5A cause a circulating current. This leads to overheating and protection of anger involved.

Mini Amplifier Stereo 4.5 Volt - 5.5 Volt

This circuit is ideal for small power audio applications such as portable CD players or radio sets.The circuit has been designed strictly toward the ingredients and found to be working well.

MAX9710 Stereo Audio Power Amplifier IC capable of producing 3Watts and out, of which 4 Ohm loads. MAX9710 uses a single 4.5V to 5.5V Power Thurs It is ideal for the provision of the manual is also applications.The IC Thermal overload protection.

Rangkaian Mini Anplfier Stereo
Skema Rangkaian Mini Amplfier Stereo

Use a 5 V DC power supply for powering the circuit. f you want to use a battery ,then use a 6V battery with a IN 4007 diode series to the positive terminal of it.The diode will drop 0.7 V and the IC will get the rated ~5V.This is just a saftey recommendation


Features IC MAX9710

* 3W into 3Ω (1% THD+N)
* 4W into 3Ω (10% THD+N)
* Industry-Leading, Ultra-High 100dB PSRR
* PC99/01 Compliant
* Patented Click-and-Pop Suppression
* Low 0.005% THD+N
* Low Quiescent Current: 7mA
* Low-Power Shutdown Mode: 0.5µA
* MUTE Function
* Tiny 20-Pin Thin QFN (5mm x 5mm x 0.8mm)

3 Volt - 6 Volt Mini Audio Amplifier

Here is a mini 2W audio amplifier is suitable for small handheld radios and other portable audio gadgets. The amplifier circuit can be run from 3Volt. This Mercury is ideal for battery operated module.

6 Volt Mini Audio Amplifier

Skema Rangkain 3 Volt - 6 Volt Mini Audio Amplifier


The potentiometer circuit can be used to control volume. Capacitor C1 and C2 are designed to filter supplyvoltage If the battery separator is used as operations offer source.For using batteries C1 and C2 are not required.

IC TDA7052 is a mono output amplifier in 8-comng Head DI package (DIP). The device is designed primarily for battery-operated portable audio circuits. Features include TDA 7052, no external components needed, no switch-on or switch-off button sounds great overall stability and very low power consumption (quiescent current of 4 mA), low THD, it is not necessary any cooler and short-circuit proof.

Profit TDA 7052 is set internally at 40 dB. . Compensate for the reduction of output power due to low voltage TDA7052 uses Bridge-Tied-Load principle
(BTL), which can provide power about 1 to 2 W RMS (THD = 10%), 8 ohm load to the power supply 6 V.


12 Volt Audio Amplifier Used IC TDA7222AP

This is the circuit diagram of a 6W audio power amplifier using the IC TA7222AP. IC TDA7222AP is an excellent integrated audio amplifier which can deliver 5.8W to a 4 Ohms load at 12V supply voltage. The IC has very good features like, muting function, low distortion, high ripple rejection, short circuit protection, thermal shut down etc. This amplifier can be operated from 8 to 12V and this makes it ideal for car radio applications.

Audio Amplifier IC TDA7222AP
Skema Rangkaian 12 Volt Audio Amplifier IC TDA7222AP

Note
  • Use 12V DC for powering the circuit.
  • The IC must be heatsinked.
  • Speaker can be a 4 ohms one.
  • For optimum performance input and output must be separately grounded.




TA7222AP pin out

Pin Name Description
1 Vcc Supply Voltage
2 RR Ripple Reject
3 MC Muting control
4 OP AF Signal Input
5 FB FB Filter
6 GA Gain adjust
7 GND Ground
8 GND Ground
9 OP AF Output
10 BS BootStrap
.

50 Watt Rms Audio Amplifier

Power amplifier is very important role, because the greater the power used amplifeir the better the sound can also be produced. by using the power amplifier that has a great power will strengthen the energy pounding bass tone or low tone, while the high tone or treble tone quality is maintained.

In skame series of images below presented the series of power amplifiers with 50 watts rms amplifier using NPN and PNP transistors 2n is 2n 7391 and 3055. if the scheme is not clearly visible Kilik so please double picture more clearly visible

50 Watt Rms Audio Power Amplifier
Skema Rangkaian 50 Watt Rms Audio Power Amplifier

Note:
  • Transistor Q3 and Q4 must be in pairs with the heatsink.
  • Use a well regulated and filtered power supply.
  • Connect a 10K POT in series with the input as volume control if you need.Not shown in circuit diagram.

List Component:

R1 1 200 Ohm 1/4 W Resistor
R2 1 200K 1/4 W Resistor
R3 1 30K 1/4 W Resistor
R5 1 1K 1/4 W Resistor
R6 1 5K 1/4 W Resistor
R7,R10 2 1 Meg (5%) 1/2 W Resistor
R8,R9 2 0.4 Ohm 5 W Resistor
R11 1 10K Pot R12,R13 2 51K 1/4 W Resistor
R14 1 47K 1/4 W Resistor
C1 1 100uF 35V Electrolytic Capacitor
C2 1 0.011uF Capacitor
C3 1 3750pF Capacitor
C4,C6 2 1000pF Capacitor
C5,C7,C8 3 0.001uF Capacitor
C9 1 50pF Capacitor
C10 1 0.3uF Capacitor
C11,C12 2 10,000uF 50V Electrolytic Capacitor
U1,U2 2 741 Op Amp
U3 1 ICL8063 Audio Amp Transister Driver thingy
Q1 1 2N3055 NPN Power Transistor
Q2 1 2N3791 PNP Power Transistor
BR1 1 250 V 6 Amp Bridge Rectifier
T1 1 50V Center Tapped 5 Amp Transformer
S1 1 SPST 3 Amp Switch S2 1 DPDT Switch
F1 1 2 Amp Fuse
SPKR1 1 8 Ohm 50W Speaker
.

GAMBAR|SPESIKASI|HARGA NOKIA X3
GAMBAR SPESIKASI NOKIA X3GAMBAR NOKIA X3
GAMBAR SPESIKASI NOKIA X3

Nokia will release the latest mobile phone with a series of X, namely Nokia X3. Mobile music will be marketed at a price of about 1.8 million.

Nokia X3 is a mobile phone that combines stereo speakers and enough storage capacity with a 3.2 megapixel camera. With such a complete specification, when Nokia X3 marketed at a price of 1.8 million, this phone tergolog cheap.

The Nokia X3 is a sleek and stylish slide phone with dedicated music and volume keys to control your sounds. It also has a combined send/end key and camera-shutter key for quick and easy operation. The design also features lighting effects around the dedicated ‘Navi’ key.

Priced for mass-market appeal, it is the first S40 device - the classic Nokia interface loved by millions - to offer direct access to Ovi Store. Using the store’s catalogue of applications no two X3’s need ever be the same.

As one of Nokia’s ‘Comes With Music’ devices the X3 enables users to discover, download and keep any and every track they want from the millions available in the Nokia Music Store*. The Nokia X3 also supports side-loading from PC - and comes pre-loaded with sample audio tracks and music videos from leading artists.

On top of a great music experience, the Nokia X3 offers a full set of features including a 3.2 megapixel camera, video recording and editing, email and instant messaging, web-browsing, and navigation with Nokia Maps. It even comes pre-loaded with the Guitar Rock Tour mobile game from Gameloft.


SPECIFICATION
  • Size: 96 x 49.3 x 14.1 mm
  • Display: 2.2 inch QVGA (240 x 320 pixels) with up to 262K colors
  • Camera: 3.2 megapixels with full focus and 4x zoom
  • Video recording at QVGA quality 30 frames-per-second
  • Memory: Up to 46 Mb user memory and supports up to 16GB MicroSD
  • Data Connectivity: GPRS/EGPRS, 3GPP Rel 4, GSM Quadband
  • Talk time: Up to 7.5 hours
  • Stand-by time: Up to 380 hours
  • Music playback: Up to 26 hours

 

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