22 Watt Audio Amplifier Circuit
The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for satellite speakers in a surround ...
improved 3 transistor audio amp
This circuit is similar to the one above but uses positive feedback to get a little more amplitude to the speaker. I copied it from a small 5 transistor radio t...
20W Audio Amplifier using LM1875
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Tiny audio amplifier using LM386
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Amplifier of acoustic frequencies and preamplifier
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Guitar Amplifier
The aim of this design is to reproduce a Combo amplifier of the type very common in the `sixties and the `seventies of the past century. It is well suited as a ...
10W Audio Amplifier with Bass-boost
This design is based on the 18 Watt Audio Amplifier, and was developed mainly to satisfy the requests of correspondents unable to locate the TLE2141C chip. It u...
50 Watt Amplifier
This is a handy, easy to build general purpose 50 watt amp. The amp has an input for a radio, TV, stereo or other line level device. It also has a phono input f...
25W Mosfet audio amplifier
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Hi-Fi Preamplifier circuit
This circuit was submitted by Graham Maynard from Newtownabbey, Northern Ireland. It has an exceptionally fast high frequency response, as demonstrated by apply...
Chill-amp
Experimenting with `gainclone` amplifiers. Gainclone amplifiers use opamps instead of the tubes and transistors that can be found in most amplifiers. I now pres...
Simple Transistor Amplifier Circuit Schematic and Explanation
This circuit doesn`t work as well as it could. I made it when I had a lesser understanding of circuit design. I`ll probably make a new and improved schematic an...
Preamplifier with LA3161
Preamplifier with LA3161 Preamplifiers are used to amplify low level signals such as those from mikes, tape heads before they are fed into power amplifiers. Pow...
LM 386 Audio Amplifier
LM 386 Audio Amplifier LM386 is one of the earliest audio ICs but is still going strong. It works with a few external components and is indispensable for genera...
Improved 3 Transistor Audio Amp
Improved 3 Transistor Audio Amp , The load resistor for the driver transistor is tied directly to the + supply. This has a disadvantage in that as the output mo...
Amplifier circuits
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Band 2 Preamplifier
The lower FET operates in common source mode, while the upper FET, operates in common gate, realising full high frequency gain. The bottom FET is tunable allowi...
Audio Pre-Amplifier
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Band 2 Preamplifier
The circuit uses two 2N3819 FET`s in cascode configuration. The lower FET operates in common source mode, while the upper FET, operates in common gate, realisin...
Video Distributor Amplifier
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