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Voice-activated wireless intercom duplex circuit

Published on Apr 26 2011 // Voice Controlled Circuits

Voice-activated wireless intercom duplex circuit.

Produced by the circuit for the FM wireless intercom duplex mode, operating frequency is 30MHz, using voice-activated electronic switch, the circuit is simple and convenient energy. Voltage 3 ~ 9V, transmitting power 1 ~ 5w.
Voice duplex wireless radio receiver and transmitter sub-two relatively independent parts, the antenna matching network to transmit and receive common, specific circuit as shown. Launched in part by the microphone amplifier circuit, electronic switch, oscillation and frequency circuits, incentive amplification, power amplification and antenna matching network components. Received in part by the antenna matching network, FM receiving circuit, electronic switches and power amplifier circuit.