Simple LM386 Audio Amplifier

This simple amplifier shows the LM386 in a high-gain configuration (A = 200). For a maximum gain of only 20, leave out the 10 uF connected from pin 1 to pin 8. Maximum gains between 20 and 200 may be realized by adding a selected resistor in series with the same 10 uF capacitor.


The 10k potentiometer will give the amplifier a variable gain from zero up to the maximum.

This circuit can be used to strengthen  signals from the mini radio,  music bell, and other children toys.

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