Few Transistor amplifier circuits

admin March 14, 2011 25 Comments
This article is a list of various types of amplifier circuits built using Transistors alone.This includes a Class AB amplifier using 4 transistors, then we have a headphone amplifier circuit and finally a low power amplifier using transistor. This...
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Audio amplifier circuit using TDA2040

admin February 10, 2011 28 Comments
30 Watts Audio amplifier Circuit Description. A 30 watt audio amplifier circuit using TDA2040 is shown here. TDA2040 is a Class AB monolithic integrated audio amplifier available in Pentawatt package. The IC has low harmonic distortion, low cross over...
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MOSFET amplifier circuit – 10 Watts

admin March 10, 2011 2 Comments
10 Watts MOSFET Amplifier Description. The diagram shown here is of a 10W MOSFET amplifier circuit that requires only a single supply. Single rail supply is seldom used in Class-B power amplifiers. Anyway, for low power applications like this...
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50 Watt MOSFET amplifier

admin March 10, 2011 1 Comment
A simple and easy to build 50 watt MOSFET audio amplifier circuit is shown below. The circuit uses easily available components and provides excellent sound quality .   Description: The first stage of the amplifier is a differential amplifier...
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Three transistor audio amplifier

john April 7, 2010 50 Comments
Description. This is the circuit diagram of a simple three transistor audio amplifier that can deliver around 100mW power to a 25 Ohm speaker. The diodes D1 and D2 provides a constant bias voltage for the transistors Q1 and...
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Hi Fi Amplifier circuit

admin November 27, 2018 7 Comments
Hi Fi Amplifier Circuit – 2X12 Watts HiFi or High fidelity is a term used to indicate equipment that reproduces a high quality of sound. The highlight of Hi-Fi equipment is inaudible noise or distortions and a natural frequency response. Hifi...
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Mini Audio Amplifier circuit

admin November 27, 2018 122 Comments
Mini Amplifier Circuit Audio amplifiers are electronic amplifiers that are used to amplify weak audio signals from an input like a mic to high amplitude signals to be reproduced through loudspeakers. This is a very simple hobby project suitable for...
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Transistor Amplifier Circuit-12 Watts

jacky November 15, 2018 5 Comments
12 Watts Transistor Amplifier Circuit Description The circuit shown below is not at all expensive as the amplifier contains only an op-amp and four transistors (easily available from your electronics junk box). Here the op-amp used is uA 741...
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