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20 + 20 watts MOSFET audio amplifier

2014-11-02 02:27  
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A very simple and high efficiency MOSFET audio amplifier can be constructed using this circuit diagram that is based on MOSFET transistors . A TL071 operational amplifier circuit is used an input stage .

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This MOSFET audio amplifier circuit will provide a 20 + 20 watts output power in a 8 ohms load . The THD for this audio amplifier circuit is less than 0.15% .
For the power stage this audio amplifier use two complementary MOSFET transistors IRF9520 , IRF520 .
This 20 watts audio amplifier circuit needs a dual 20 volts DC power supply circuit ( +/- 20 volts ) .

20 + 20 watts MOSFET audio amplifier circuit diagram