Showing posts with label Home Amplifier. Show all posts
Showing posts with label Home Amplifier. Show all posts
Saturday, April 23, 2011
This amplifier has been simulated extensively, although I haven't built it yet. I am saving circuit this one for a time when I can spend good time building and making sure the wiring is going to be optimal. I am going to use this amp in a bi-amp situation with passive filters on the input. This will result in two amplifiers that amplify the highs and two amplifying the lows (for stereo) and thus I can achieve an effective power of 120W into each speaker.
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| Skema Rangkaian 30W Class AB Amplifier With TIP3055/TIP2955 |
To set the above amplifier up, set R1 to max and R12 to 0. After doing this successfully, power on the amplifier. Set R1 so that the measured output offset is between 30 and 100mV. Once set, adjust R12 slowly to achieve a quiescent current of around 120mA. Keep checking the quiescent current as the amp heats up as it might change due to voltage drop changes in the output devices caused by heat. The heatsinks should be 0.6K/W or less for two amplifiers.
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| Skema Rangkaian 200W MOSFET Amplifier |
A audio power amplifier circuit ideal for guitar or PA work or for use as a general-purpose subwoofer or hifi amplifier. Many people prefer Mosfets because of their legendary ruggedness. Altronics had a Mosfet amplifier module which produced 200W into a 4 Ohm load and so we decided to take a look it. It turned out to be based on the "Pro Series One" as mentioned above, although this version by Altronics has been derated and adapted to different Mosfets. It has a rated power output of 140W into 8W and 200W into 4 Ohm. Frequency response is within 1dB from 20Hz to 80kHz. Total harmonic distortion is rated at less than 0.1% up to full power and signal-to-noise ratio with respect to 200W is better than 100dB unweighted.
This 200W MOSFET Amplifier Circuit From http://electronics-diy.com/
This is a 60W power amplifier circuit based on 2N3055 transistor. The optimal supply voltage is around 50V, but this amp can work from 30 to 60V. As you can see, in this design the components have a big tolerance, so you can build it with almost any components that you can find at home. The output power transistors can be any NPN types, but do not use Darlington types.
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| Skema Rangkaian 60W Power Amplifier Class B |
Capacitor C1 regulates the low frequencies (bass), as the capacitance grows, the low frequencies are getting louder. Capacitor C2 regulates the higher frequencies (treble), as the capacitance grows, the higher frequencies are getting quieter.
This is a class B amplifier, this means, that a current must flow through the end transistors, even if there is no signal on the input. This current can be regulated with the 500 Ohm trimmer resistor. As this current increases, the sound of the amplifier is better, but output transistors are dispatching more heat. If the current is decreased, the transistors are dispatching less heat, but the sound quality is decreased.
Thursday, March 3, 2011
Here is a 120 watt stereo amplifier circuit using STK4241V. The MAX9710 a stereo audio power amplifier IC capable of delivering 2 x 120 Watts of out put to 8 Ohm loads. MAX9710 can be operated from a single ±32V to ±54V power supply.
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| 120 Watt Stereo Amplifier Circuit Using IC STK4241V |
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| STK4241V IC |
This amplifier circuit is suitable for home power audio devices. The STK4241V amplifier specifications might lead you to believe that it can use supply voltages of up to ±78V. With zero input signal (and therefore no output) it might, but I don't recommend anything greater than ±45V if 8 ohm loads are expected, although ±54V will be fine if you can provide good heatsinking.
Sunday, February 27, 2011
This is a 300W power amplifier OCL circuit that the circuit has been stout kit on the market. If you are fanatical about the use of transistors 2N3055 and MJ2955 jengkol then this circuit is the answer. This power amplifier OCL circuit delivering a blasting 300 watts to a 4 Ohm speaker.
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| 300 Watt OCL Audio Amplifier Circuit |
The amplifier circuit is very Cheapest and cans be powered from 24 to 32 V/5A dual power supply. You must try this circuit. Its working great. Because 4 transistors (2 x 2n3055 and mj 2955) on the final amplifier will of some very hot then add the aluminum finned cooler and the fan so That the transistor is not too high temperatures
Saturday, January 22, 2011
The 300W Amplifier circuit is shown it is a reasonably conventional design. Connections are provided for the Internal SIM, and filtering is provided for RF protection (R1, C2). The input is via a 4.7uF bipolar cap, as this provides lots of capacitance in a small size. Because of the impedance, little or no degradation of sound will be apparent. A polyester cap may be used if you prefer - 1uF with the nominal 22k input impedance will give a -3dB frequency of 7.2Hz, which is quite low enough for any sub.
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| Rangkaian 300W Power Amplifier For Subwoofer |
Continuous power into 8 ohms is typically over 150W (250W for ±70V supplies), and it can be used without additional transistors at full power into an 8 ohm load all day, every day. The additional transistors are only needed if you want to do the same thing into 4 ohms at maximum supply voltage
Although I have shown MJL4281A and MJL4302A output transistors, because they are new most constructors will find that these are not as easy to get as they should be. The alternatives are MJL3281/ MJL1302 or MJL21193/ MJL21194.
Because this amplifier circuit operates in "pure" Class-B (something of a contradiction of terms, I think), the high frequency distortion will be relatively high, and is probably unsuited to high power hi-fi. At the low frequency end of the spectrum, there is lots of negative feedback, and distortion is actually rather good, at about 0.04% up to 1kHz. My initial tests and reports from others indicate that there are no audible artefacts at high frequencies, but the recommendation remains.
Circuit from: www.sound.westhost.com
The amplifier circuit uses the basic circuitry of the 70W power amplifier, but modified for true Class-A operation - it should be pretty nice! This amp has been built by several readers, and the reports I have received have been very positive.
With simulations, everything appears to be as expected, but although I have yet to actually build it and test it out thoroughly, no-one has had any problems so far. Using +/-20 Volt supplies - either conventional, regulated or using a capacitance multiplier, it should actually be capable of about 22 W before clipping, but expect to use a big heatsink - this amp will run hot.l.)
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| Rangkaian 20 Watt Class-A Power Amplifier |
The current sink shown should have very high linearity, since it is based on the same concept as the output stage devices. The 0.25 Ohm resistor should cause little grief (4 x 1 Ohm 1W resistors in parallel), but some experimentation may be needed here, since the base-emitter voltage of the BC549 determines the current. This circuit works by using the BC549 to steal any excess base current from the compound pair. As soon as the voltage across the 0.25 Ohm resistor exceeds 0.65V, the transistor turns on and achieves balance virtually instantly.
The 1k trimpot in the collector of the first LTP transistor allows the DC offset to be adjusted. The nominal value is around 400 ohms, but making it variable allows you to set the output DC offset to within a few mV of zero.
The 70 watt amplifier circuit is pretty much original, and with a +/-35V supply as shown, will provide 70W into 8 Ohms quite happily. In its lifetime, many of the mods mentioned above were made anyway, since I could never find the circuit diagram when I needed it, so often made it up as I went along! It is a fair testament to the amp that all sorts of resistor and capacitor substitutions can be made, and it still works fine.
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| Skema Rangkaian 2N30055|MJE2955 70 Watt Power Amplifier |
This amplifier is fairly well behaved for turn on, and should issue (at worst) the smallest click as power is applied. When power is removed, after about 5 seconds or so, there will normally be a low level thump - this is not dangerous to speakers, unless used in tri-amp and directly connected to the tweeters - DO NOT DO THIS - not with any amp. Always use a capacitor in series with tweeters (see Bi-Amplification, Some thoughts on Tri-Amping).
Circuit from: www.sound.westhost.com
The TDA7293 Power Amplifier circuit is conventional, and is very simple because all additional internal functions are unused. The LED is optional, and if you don't think you'll need it, it may be omitted, along with series resistor R3. All connections can be made with plugs and sockets, or hard wired. In most cases, I expect that hard wiring will be the most common, as the connectors are a pain to wire, and add unnecessary cost as well as reduce reliability.
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| Skema Rangkian 100Watt Power Amplifier TDA7293 |
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| TDA7293 Pin Out |
The TDA7293 amplifier specifications might lead you to believe that it can use supply voltages of up to ±50V. With zero input signal (and therefore no output) it might, but I don't recommend anything greater than ±35V if 4 ohm loads are expected, although ±42V will be fine if you can provide good heatsinking. In general, the lower supply voltage is more than acceptable for 99% of all applications, and higher voltages should not be used unless there is no choice. Naturally, if you can afford to lose a few ICs to experiments, then go for the 42V supplies (obtained from a 30+30V transformer).
Friday, December 10, 2010
This is a circuit of 60 watt HiFi audio amplifier system using IC TDA2052 . The circuit is class AB amplifier which operates split power supply type with a maximum voltage of 25V and generates 60 Watt power output. Heatsink should be installed on the power IC to avoid excessive heat.
Rangkaian 60W HiFi Power Amplifier TDA2052
TDA2052 IC Pinning
The TDA2052 is a monolithic integrated circuit in Heptawatt package, intended for use as audio class AB amplifier in TV or Hi-Fi field application. Thanks to the wide voltage range and to the high out current capability it’s able to supply the highest power into both 4/8 loads even in presence of poor supply regulation. The built in Muting/Stand-by function simplifies the remote operations avoiding also switching on-off noises
Absolute Maximum Ratings of IC TDA2052
DC Supply Voltage : ±25 V
Output Peak Current (internally limited) : 6 A
Power Dissipation : 70°C 30W
Operating Temperature Range : +70 °C
Storage and Junction Temperature : -40 to +150 °C
The following a circuit of 80W audio amplifier is using by IC TDA7295. The circuit very simple and will be easy to build. TDA7295 has many features to support your audio system, the most important is that the IC has wide voltage range, very low distortion and very low noise feature.
Rangkaian Audio Amplifier TDA7295 - 80W
TDA7295 IC Pinning- The TDA7295 IC must be fitted with adequately sized heat sinks.
- Power supply voltage should not exceed 40V
- Connect a 50K POT in series with the input as volume control if you need. Not shown in circuit diagram.
The TDA7295 is a monolithic integrated circuit in Multiwatt 15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Topclass TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4Ω and 8Ω loads even in presence of poor supply regulation, with high Supply Voltage Rejection. The built in muting function with turn on delay simplifies the remote operation avoiding switching on-off noises.
This is a 2 x 70W audio power amplifier circuit which built using single IC STA550. The amplifier circuit require few external components (most of them are resistors and capacitors) and is very easy to design The STA550 audio amplifier is capable to provide a maximum output power of 70 watts on two channels (70 + 70 watts).
STA550 - 2 x 70W Audio Amplifier Circuit
STA550 PinoutThis power amplifier circuit require a multi voltage power supply , because the amplifier require : +Vs Positive supply voltage referred to pin 13 (GND), Negative supply voltage referred to pin 13 (GND) -Vs, VCD+ Positive supply voltage tracking rail, VCD- Negative supply voltage tracking rail . The +Vs Positive supply voltage can be : +20 to +30 volts, -Vs Negative supply voltage : -10 to -22 volts , Positive supply voltage tracking rail VCD+ : +3 to 17 volts , Negative supply voltage tracking rail VCD- : -17 to -3 volts . VCD- must not be more negative than -Vs and VCD+ must not be more positive than +VS .
In this circuit diagram, R1/R3 (or R2/R4) ratio fix the gain of the preamplifier. If the input signal is very low, is possible to increase the gain fixing the product Vin*G = cost. In that case is possible to increase G decreasing R1,2 from 10KW until 2KW without relevant effetcs on the circuit behavior and remaining in the operating range Iin_max = Vin_max/R1(2) <1ma.>This is a 2 x 70W audio power amplifier circuit which built using single IC STA550.
Thursday, December 9, 2010
Rangkaian Amplifier TK4036II
This is a 50 Watt Audio power amplifier circuit based single IC STK4036II. Use heatsink to prevent overheating on the IC. The amplifier circuit will give you good quality of sound unexpensive and have low price. It is easy we make a power amplifier using only few external components. The STK4036II amplifier are will find in enough eponymous stereo amplifiers , but also in enough activety loudspeakers.
This is a 50 Watt Audio power amplifier circuit based single IC STK4036II. Use heatsink to prevent overheating on the IC. The amplifier circuit will give you good quality of sound unexpensive and have low price. It is easy we make a power amplifier using only few external components. The STK4036II amplifier are will find in enough eponymous stereo amplifiers , but also in enough activety loudspeakers.
Rangkaian STK4036II - 50W Stereo Power AmplifierSTK4036II Power Amplifier circuit features:
- Compact package for thin-type audio sets
- Member of pin-compatible series with outputs of 20 to 200W
- Easy heatsink design to disperse heat generated in thintype stereo sets
- Constant-current circuit to reduce supply switch-on and switch-off shock noise
- External supply switch-on and switch-off shock noise muting, load short-circuit protection, thermal shutdown and other circuits can be tailor-designed.
Wednesday, November 24, 2010
Here is a 35 Watt audio amplifier circuit based LM391 chip. The LM391 Audio Power Driver is designed to drive external Power Transistors in 10 to 100 watt power Amplifier designs. High power supply voltage operation and true high fidelity performance distinguish this IC. The LM391 is internally pro- tected for output faults and thermal overloads; circuitry pro- viding output Transistor protection is user programmable. By National Semiconductor
Rangkaian 35 Watt Power AmplifierBased on LM391
The circuit was designed to drive the power transistors of a power amplifier that will produce a power output of 35 Watts. Inductor L1 is constituted by 20 coils of wire, with thickness 0.9mm, round resistor R16. Transistors Q3-4 should be placed on heatsink. If are used the Q3-4 in packing TIPxxxx they can be placed straight above in PCB. If however they are used transistor in packing TO-3, then it will be supposed they are connected with short cables in the corresponding places on PCB.
List componet of 35 Watts amplifier LM391 circuit
- R1-3-5-8-10 = 1Kohm
- R2-7-11 = 100Kohm
- R4-6 = 4.7Kohm
- R9-12 = 100ohm
- R13 = 47Kohm
- R14-15 = 0.15ohm 5W
- R16 = 1ohm 2W carbon 5%
- R17 = 10ohm 1W carbon 5%
- C1 = 2.2uF 63V
- C2 = 4.7uF 25V
- C3-17 = 47uF 63V
- C4-8-9 = 1nF 100V MKT
- C5 = 47nF 100V MKT
- C6 = 22pF ceramic
- C7-11-12-13 = 100nF 100V MKT
- C10 = 22pF ceramic
- TR1 = 10K Trimmer
- D1-2 = IN4002
- IC1 = LM391
- Q1 = BD139
- Q2 = BD140
- Q3 = TIP2955
- Q4 = TIP3055
- L1 = See text
Schematic diagram of the class-H BTL amplifier TDA1562Q is shown below, in this circuit. Has an internal booster circuit elements That allow to develop at 4 Ohm load with 14.2 volts power supply, the power to 70 Watts
Rangkaian TDA1562Q - 70 Watts BTL AmplifierThe TDA1562Q contains a mono BTL class-H power amplifier output. At low output power, up to 18 W, the device operates as a normal BTL amplifier. When a larger output voltage swing is required, the internal supply voltage is lifted by means of the external electrolytic capacitors. Due to this momentarily higher supply voltage of the obtainable output power is 70 W.
Besides shortcircuit protection and thermal protection (Almost 145 degree), this output impedance amplifiers offer a protection, if the impedance it is low Than 0.5 ohms the circuit is deactivated.
Feature of TDA1562Q BTL Amplifier
Besides shortcircuit protection and thermal protection (Almost 145 degree), this output impedance amplifiers offer a protection, if the impedance it is low Than 0.5 ohms the circuit is deactivated.
Feature of TDA1562Q BTL Amplifier
- Output power:----------------------36W RMS into 4R
- Music power:-----------------------70W into 4R
- Frequency response:---------------1dB down at 28Hz and 55kHz
- Input sensitivity:-------------------130mV RMS (for 36W into 4?)
- Harmonic distortion:----------------typically 0.2% (see graphs)
- Signal-to-noise ratio:----------------95dB unweighted (22Hz to 22kHz)
Saturday, November 13, 2010
This present here is a 20Watts mono and 10Watt Car Stereo Amplifier circuit using IC TDA2004.
Rangkaian TDA 2004 BTL|Stereo AmplifierThe TDA2004 is a class B dual audio power amplifier in MULTIWATT [package Designed specifically for car radio applications. TDA2004 has low noise, low distortion, and robust. The robustness is supported by its operation safety protection features: very inductive loads, load dump voltage surge, overheating, the output AC-ground short, fortuitous open ground. Other Important Things is space and cost saving: very low external components counts, and very simple mounting system with no need for electrical isolation Between the package and the heat sink Because the heat contact metal of the package is already connected to ground.
TDA2004A Pinning
This is a power amplifier circuit which built using a TDA2002 power amplifier IC module. These are replacements for the original LM383 which is no longer available. It is easy to build and has a minimum of external components. The module has both short circuit protection and thermal protection. It can drive loads as low as 1.6 ohm and is capable of delivering over 10 watts from a 16 V supply.
Rangkaian Amplifier TDA2002The small amplifier is constructed around the TDA2002 IC, capable of delivering 4Wrms at 4ohms. The supply voltage may be anywhere between 8 and 18V, and the IC will accept transient voltage peaks of up to 28V without damage. The additional features of TDA 2002, very low number of external components, ease of assembly, space and cost saving, are maintained. The device provides a high output current capability (up to 3.5A) very low harmonic and cross-over distortion. Completely safe operation is guaranteed due to protection against DC and AC short circuit between all pins and ground, thermal over-range.
List Component
R1 : potentiometer 10 k ohm
R2 : 220 ohm 1/4 watt resistor
R3 : 2R2 ohm 1/4 watt resistor
R4 : 1 ohm 1/4 watt resistor
IC1 : TDA2002 amplifier module 1, Heat sink
C1 : 10uF/50V electrolytic capacitor
C2 : 470uF/16V electrolytic capacitor
C3 : 2200uF/25V electrolytic capacitor
C4 : 100 nF mylar 1
C5 : 100 nF monoblock 1
C6 : 100uF ecap 1
Sunday, August 15, 2010
This circuit is a simple audio amplifier based on TDA1910 IC. This circuit will deliver 10W power output if used 8 ohm loudspeaker and powered with 24V DC supply.
TDA 1910 IC PinNote
- Use 18-24V DC for powering the circuit.
- A proper heat sink is necessary for the IC.
The TDA 1910 IC is a monolithic integrated circuit inmultiwatt package, intended for use in Hi-Fi audio power applications, as high quality TV sets. The TDA 1910 meets the DIN 45500 (d = 0.5%) guaranteed output power of 10W when used at 24V/4W. At 24V/8W the output power is 7W min.
Maximun ratings TDA 1910 IC
- Supply voltage 30 V
- Output peak current (non repetitive) 3.5 A
- Io Output peak current (repetitive) 3.0 A
- Input voltage 0 to + Vs V
- Differential input voltage ± 7 V
- Power dissipation at Tcase = 90°C 2 0W
- Storage and junction temperature -40 to 150 °
Here is an audio amplifier based on the TDA7240 IC from ST Microelectronics. The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications
TDA7240 IC PinThis circuit of audio amplifier based IC TDA7240 can deliver 20 watts of audio output power into a 4ohm load. The IC has minimum external parts count and is available in the 7 pin compact Heptawatt package. The IC also has a lot of good features like loud speaker protection, short circuit protection, low noise, low distortion etc. The circuit can be operated from a 12V DC single power supply and this makes it very useful in car audio application
Note:
- Use 4 ohm, 20W speaker.
- S1 is the standby switch and S2 is the ON/OFF switch.
- LED D2 is a power ON indicator.
- give good cooling at TDA7240 IC
Saturday, May 22, 2010
45 Watt Class B amplifier Circuit of this very simple , straightforward but Rugged circuit, though intended for any high quality audio applications and, above all, to complete the series of articles recently started forming the Modular Preamplifier Control Center, is well suited Also to make a very Good Guitar or Bass amplifier
Note
- Power transistors Q8 and Q9 Can be Used satisfactorily: 2N3055/MJ2955, TIP3055/TIP2955, TIP35/TIP36, MJ802/MJ4502 amongst others.
- Power transistors Q8 and Q9 Should be mounted on a black, finned heatsinks as usual.
- Output power (1KHz sinewave): 45 Watt RMS into 8 Ohms - 69W RMS into 4 Ohms
- Sensitivity: 0.81V RMS input for 45W output
- Frequency response @ 1W RMS: 15Hz to 23KHz -0.2dB
- Total harmonic distortion @ 1KHz: 1W 0.008% 20W 0.008% 45W 0.016%
- Total harmonic distortion @10KHz: 1W 0.01% 20W 0.015% 45W 0.025%
- Unconditionally stable on capacitive loads
- R1: 18K
- R2: 3K9
- R3,R6: 1K
- R4: 2K2
- R5: 15K
- R7: 22K
- R8: 330R
- R9,R10: 10R
- R11,R12: 47R
- R13: 10R/1 Watt
- C1: 1µF/63V
- C2: 470pF/63V
- C3: 47µF/25V
- C4: 15pF/63V
- C6: 220nF/100V
- C6: 100nF/63V
- D1,D2,D3,D4: 1N4148
- Q1,Q2: BC560C
- Q3,Q4: BC556
- Q5: BC546
- Q6: BD139
- Q7: BD140
- Q8: 2N3055
- Q9: MJ2955
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