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Audio amplifier circuit diagrams
August 6, 2010
The example below illustrates using an op-amp as an audio amplifier for a simple intercom. A small 8 ohm speaker is used as a microphone which is coupled to the op-amp input through a 0.1uF... [more]
August 6, 2010
Here is a little audio amplifier similar to what you might find in a small transistor radio. The input stage is biased so that the supply voltage is divided equally across the two complimentary output... [more]
August 6, 2010
Improved 3 Transistor Audio Amp (80 milliwatt) [more]
August 6, 2010
2 x 18W Hi-Fi Stereo Power Amplifier based around two TDA2030 ICs. It has good input sensitivity, low distortion, good operating stability and full protection against overloads and output short-circuits. It can be used as... [more]
circuit from:http://www.extremecircuits.net/2010/01/18w-18w-stereo-hi-fi-audio-amplifier.html
August 6, 2010
High Quality very simple unit, No need for a preamplifier [more]
circuit from:http://www.extremecircuits.net/2009/07/18watt-audio-amplifier.html
August 6, 2010
This is a 25 Watt basic power amp that was designed to be (relatively) easy to build at a reasonable cost. It has better performance than the standard STK module amps that are used in... [more]
circuit from:http://www.extremecircuits.net/2009/07/25-watt-audio-amplifier-circuit.html
August 5, 2010
This amplifier was designed to be self-contained in a small loudspeaker box. It can be feed by Walkman, Mini-Disc, iPod and CD players, computers and similar devices fitted with line or headphone output. Of course,... [more]
circuit from:http://www.extremecircuits.net/2009/07/2watt-audio-amplifier.html
August 5, 2010
The Power Amplifier section employs only three transistors and a handful of resistors and capacitors in a shunt feedback configuration but can deliver more than 18W into 8 Ohm with 0.08% THD @ 1KHz at... [more]
circuit from:http://www.extremecircuits.net/2009/12/30-watt-audio-power-amplifier-schematic.html
August 5, 2010
It's based on a Philips class-H audio amplifier IC and can deliver 36W RMS OR 70W music power, all from a 13.8V supply. Our new Mighty Midget Amplifier can really pack a punch - around... [more]
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