20W Mono Audio Amplifier Using LM1875

20W Audio Amplifier project is based on LM1875 IC.  Power supply input upto 48 VDC  Output 20 W, 4 Ω  Very low distortion (THD  0.015%), good channel separation and ripple rejection  IC built-in thermal, short circuit protections  Internal output protection diodes  Terminal pins for connecting input  Screw terminal connector for easy power supply input and speaker connection  Power-On LED indicator

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