Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Simple two way intercom


This intercom circuit is based on LM386 low voltage audio amplifier. It uses 8 ohm speaker works as microphone and speaker at the same time. 10k potentiometer is used to control the volume. As a double pole double throw switch is used in this circuit it reverses the speaker’s position and makes one as loudspeaker and another as microphone.

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