Microphone, mobile phone (634): Connection

The microphone is supplied with power on pin 1 and sends an amplified signal on the same pin. Ground is provided on pin 3.

Fig 1: Identifying Communication Flow - Mobile Phone Microphone

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Wiring diagram, mobile phone

Fig 2: Circuit Diagram - Mobile Phone Microphone (Mobile Phone)

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Wiring diagram, Communication

Fig 3: Circuit Diagram - Mobile Phone Microphone (Communication)

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