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Audio circuit diagrams
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]
August 5, 2010
These goals were achieved by using a discrete-components op-amp driving a BJT complementary common-emitter output stage into Class B operation. In this way, for small output currents, the output transistors are turned off, and the... [more]
circuit from:http://www.extremecircuits.net/2010/02/45-watt-class-b-audio-power-amplifier.html
August 5, 2010
This solid-state push-pull single-ended Class A circuit is capable of providing a sound comparable to those valve amplifiers, delivering more output power (6.9W measured across a 8 Ohm loudspeaker cabinet load), less THD, higher input... [more]
circuit from:http://www.extremecircuits.net/2009/07/5-watt-class-audio-amplifier-circuit.html
August 5, 2010
The supply rails voltage was kept prudentially at the rather low value of + and - 40V. For those wishing to experiment, the supply rails voltage could be raised to + and - 50V maximum,... [more]
circuit from:http://www.extremecircuits.net/2010/01/60-watt-audio-power-amplifier-circuit.html
August 5, 2010
This small amplifier is constructed around the TDA2003 IC, capable of delivering 4Wrms at 4ohms. The TDA 2003 has improved performance with the same pin configuration as the TDA 2002. The additional features of TDA... [more]
circuit from:http://www.extremecircuits.net/2009/09/7-watt-audio-power-amplifier-circuit.html
August 5, 2010
Here is the schematic for an 8 watt audio power amplifier. This amp can be used as a simple booster, the heart of a more complicated amplifier or used as a guitar amp. It is... [more]
circuit from:http://www.extremecircuits.net/2009/12/8-watt-audio-power-amplifier-schematic.html
August 5, 2010
Using this low-cost project one can reproduce audio from TV without disturbing others. It does not use any wire connection between TV and Loud Speaker. In place of a pair of wires, it uses invisible... [more]
circuit from:http://www.extremecircuits.net/2009/12/low-power-wireless-audio-power.html
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