Infrared automatic hand washing device 1

Published:2011/5/17 0:59:00 Author:Nicole | Keyword: hand washing device | From:SeekIC

The circuit work theory This infrared automatic hand washing device circuit is composed of power supply, infrared detection control circuit and control implement circuit, the circuit is shown in the figure 9-119. The power supply circuit is made of capacitor C1, C2, resistor R1, voltage stabilizing diode VS and rectifier diode VD. The infrared detection control circuit consists of resistors R2-R7, capacitors C3-C5, diode VD2, transistors V1, V2, pyroelectric infrared sensor integrated circuit IC1 and time base integrated circuit IC2. The control implement circuit is composed of optical coupler VLC and electromagnetic valve YV.



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