Consumer Electronics

How intercom system works in general?

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July 17, 2011 12:31PM

humans hear sounds beetwen 300herz-3.4kherz ;at this system we need to send a signal to the first spkear this signal passing the amplifier and then come to the spekar which is at the out of the circuit ;but coupling capasitör and resistörs and transistörs are important for good sound