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[Photo] Application of LM386 power amplifier integrated circuit

September 29, 2022
Click to download: LM386 information.pdf

LM386 power supply voltage is 4--12V, audio power is 0.5w. The LM386 audio amplifier is manufactured by NSC. Its power supply voltage range is very wide. It can be used up to 15V and consumes 4mA of quiescent current. When the power supply voltage is 12V, it can provide hundreds of mW under an 8-ohm load power. Its typical input impedance is 50K.

Some circuit diagram examples

Internal circuit

Amplifier The total voltage gain of this amplifier is X200, which is achieved by effectively shorting the internal impedance between pins 1 and 8.

Amplifier

AM radio

Audio sensor

Hearing aids

Oscillator
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