electronics-amplifier tutorial

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

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.

Skema Rangkain Audio Amplifier 4 Transistor

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.

Skema Rangkain 300-Watt Audio Amplifier MJ15003 -MJ15004

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

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.

Skema Rangkaian Mini Amplfier Stereo

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.

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.

Skema Rangkaian 12 Volt Audio Amplifier IC TDA7222AP

TA7222AP pin out