IFD:Printing Acoustic Interfaces/acoustic sensing circuits

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< IFD:Printing Acoustic Interfaces

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transformer microphone and 555 timer oscillator (outdated circuits)

Full Circuit

TL072 Version

TL074 Version

Printed Capacitive (Condenser) Microphone

Charge Mode Amplifier for Capacitive Microphone

275kHz Receiver

309 kHz Receiver

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