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LM386 is a low-power audio amplifier integrated circuit. It adopts 8-pin dual-in-line plastic package. The working voltage is 4V-15V. When the power supply voltage is 12V, the output power of 300mW can be obtained on an 8Ω load. Various oscillators can be easily made with LM386.
LM386 is widely used in audio power amplifier circuits. In most occasions or when used alone, LM386 can work normally, but when used in conjunction with other circuits, it may cause self-excitation and reduced sensitivity. This article mainly introduces the prevention measures to deal with this phenomenon and the precautions…
To minimize external components, the voltage gain is built in to 20. But by adding an external resistor and capacitor between pins 1 and 8,