Infrared reflector type of electronic bell circuit diagram

Published:2011/3/30 22:55:00 Author:Ecco | Keyword: Infrared reflector type , electronic bell | From:SeekIC

The infrared reflector type of electronic bell, can transmit voice frequency semaphore to tell host that vistors are coming in definite distance. The bell is also a type of annunciator. The working principle is that infrared reflector type of electronic bell consisting of infrared emission circuitry, infrared receive circuitry, low frequency oscillator, audio oscillator, audio output circuitry. etc. According to the chart:



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