SIMPLE_INTERCOM_FOR_NOISY_ENVIRONMENTS

Published:2009/6/22 23:51:00 Author:Jessie | From:SeekIC

This intercom was originally designed for motorcycle to passenger communications A simple＂passenger-to-pilot”ttercom circuit is shown. Two LM386 ICs are connected in a low-gam amplifiercircuit with the headphone output of one paired to the microphone input of the other The microphones are electret elements and the earphones can be of the in-ear type or of the small stereo/monotype that with fit inside a helmet Both amplifiers in the circuit operate at a minimum gain of 20 dB.



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