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Audio amplifier circuit diagrams
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
August 5, 2010
Designs for audio amplifiers with DC coupling to the load are not often encountered these days, even though they offer definite advantages. [more]
circuit from:http://www.extremecircuits.net/2010/05/dc-coupled-audio-amplifier.html
August 5, 2010
This circuit is intended to be placed in the same box containing the loudspeaker, forming a compact microphone amplifier primarily intended for speech reinforcement. A device of this kind is particularly suited to teachers, lecturers,... [more]
circuit from:http://www.extremecircuits.net/2009/07/speach-amplifier.html
August 5, 2010
The LME49830 EF125WT1 amplifier PCB module showcases National Semiconductor’s LME ultra-high fidelity power amplifier input stage ICs (drivers). The LME49830 is a fully complementary bipolar 200V input stage IC with 56mA (typical) of output current... [more]
circuit from:http://www.extremecircuits.net/2010/05/ultra-high-fidelity-high-power.html
August 5, 2010
Some lovers of High Fidelity headphone listening prefer the use of battery powered headphone amplifiers, not only for portable units but also for home "table" applications. This design is intended to fulfill their needs. An... [more]
circuit from:http://www.extremecircuits.net/2009/12/hiqh-quality-headphone-amplifier.html
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