Electret Condenser Microphone (ECM) Preamplifier
A microphone amplifier that may be used with either Electret Condenser Microphone (ECM) inserts or dynamic inserts, made with discrete components. The preamplif...
10W Audio Amplifier circuit based on TDA1910
Simple and cheap, that`s the advantage of this circuit. Although the output power is not high but audio quality is good, because TDA1910 has a very low noise fe...
Video Amplifier Circuit for Camera PCB
There are occasions when you want to view your video clips taken in your digital camera on your TV. You can do so by interfacing the camera video output to vide...
Digital Controlled Precision Amplifier Circuit PCB
Here is a circuit of a precision amplifier with digital control can be useful for signal conditioning of low output transducers in milli volt range. The resisto...
Schematic Diagram LM4992 bassed Stereo audio power amplifier circuit and explanation
Using the LM4992 stereo audio power amplifier you can design a very simple audio power amplifier electronic project, that can be used for portable electronic de...
Schematic Diagram 50W TK4036II baseed Stereo Power Amplifier Circuitand explanation
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 go...
Schematic Diagram 300W Power Amplifier For Subwoofer
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 prot...
Dynamic Microphone Preamp PCB
This is a 3 stage discrete amplifier with gain control. Alternative transistors such as BC109C, BC548, BC549, BC549C may be used with little change in performan...
Super Simple 3 Watt Audio Power Amplifier
Here is the circuit diagram of superb mini audio power amplifier, That can be power with 4. 5 volt dc to 18 volts dc (maximum). This amplifier is based on TDA10...
Schematics 100W Power Amplifier for Guitar
You need this schematics. Go to THIS page and you will find a good pre-amp and power amplifier for your guitar include the complete explanation of its works, an...
Dual Power Amplifier Using TDA7293 MOSFET IC
As readers will know, there are already several power amplifier projects, two using IC power amps (aka power opamps). Both have been popular, and this project i...
Video Amplifier
The video amplifier in the diagram is a well-known design. Simple, yet very useful, were it not for the ease with which the transistors can be damaged if the po...
Low-Noise Microphone Amplifier (OP270E)
The signal from a microphone is two weak for a standard line input. This low-noise DC-coupled microphone amplifier provides a solution for anyone who wants to c...
ECG Amplifier By TLC274
This circuit allows an ECG signal to be displayed on an oscilloscope. Opamps IC1a, b and d form an instrumentation amplifier with a gain of 201. IC1c amplifies ...
11W Stereo/22W Mono Power Amp Using TDA1519C
Integrated AF power amps have seen great improvements in recent years offering improved power and easier use. The TDA1519C from Philips contains two power ampli...
Very Simple Bench Amplifier
A small 325mW amplifier with a voltage gain of 200 that can be used as a bench amplifier, signal tracer or used to amplify the output from personal radios, etc....
headphone amplifier
Both halves of the circuit are identical. Both inputs have a dc path to ground via the input 47k control which should be a dual log type potentiometer. The bala...
guitar amplifier schematics
In all cases where Darlington transistors are used as the output devices it is essential that the sensing transistor (Q4) should be in as close thermal contact ...
60 watt guitar amplifier
This design adopts a well established circuit topology for the power amplifier, using a single-rail supply of about 60V and capacitor-coupling for the speaker(s...
22w stereo amplifier
Here is the 22 watt stereo audio power amplifier circuit diagram based on TDA1554 and integrated circuit from NXP semiconductors (formerly PHILIPS semiconductor...