Simple Intercom Circuit

  
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This is simple intercom circuit. Here I have used common Ic LM380. Now the switch is in the talk position for the speaker on the left, And the other persons position is listening position. If other one wants to speak The switch must be change to another position. (Both users should do that). Pins 3, 4, 5, 10, 11, 12 are grounded.
Simple Intercom Circuit - schematic




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