Both the majority of class B or AB power amplifiers currently encountered in HI-Fi amplifiers are presented in the form of integrated circuits specifically designed for this purpose. It is interesting for technicians to know how this type of amplifier works, if only out of intellectual curiosity. The provided model allows the study of several […]
Audio and Amplifier Projects
100 Watt Amplifier Circuit Diagram using LM12 IC
The LM12 integrated circuit (IC)-based 100-watt amplifier circuit is a strong audio amplification solution created to produce high-quality sound in a small package. This amplifier delivers outstanding power output while preserving a tiny footprint by using the capabilities of the LM12 IC. Because it is a monolithic circuit, the LM12 IC is an effective and […]
10 Watt Stereo Amplifier Circuit Diagram
With a simple design, this 10 watt stereo amplifier circuit offers good dynamics and excellent bass reproduction. Although its power output is modest, at 2 x 10W RMS, it allows for comfortable use in small-sized rooms, such as apartments. When paired with speakers with a minimum power rating of 20W, it will provide complete satisfaction. […]
100 Watt Power Amplifier Circuit Diagram using a Single IC TDA7294
Building a power hi-fi amplifier with MOS transistors requires the implementation of a relatively large number of components because, at the level of power stages, the connection between the bipolar transistors that make up the input stages and the MOS transistors of the output stages is far from simple. Fortunately, there is an elegant solution […]
Using Electret Microphone on Computer PC
The small circuit that we propose here provides a 20 dB gain to the microphone signal, which will finally allow you to effectively use an electret microphone on your PC. Circuit Description The diagram of our circuit is reproduced in the Figure below. Don’t expect a complicated diagram with op-amps everywhere, as our circuit is […]
75 Watt Power Amplifier Circuit
Our power amplifier only uses a handful of widely available and inexpensive components. Despite this, it can deliver an effective power output of 50 W into an 8 ohm load or 75 W into a 4 ohm load. If distortion is below 0.3% at these maximum power levels, it drops to less than 0.01% from […]