Here is the circuit of 20W audio amplifier using LM1875 IC. LM1875 is a very high quality low distortion 20 Watt audio amplifer IC available in TO-220 package. This IC has many built in features like thermal shutdown, current limiter, high gain, high current capability etc. and can be operated on a wide
range of supply voltage from 16V to 60V. This IC can be used in many electronic applications like audio systems, home theatre systems etc.
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