Sub-ultrasonic remote control switch circuit 1

Published:2011/9/26 1:55:00 Author:Rebekka | Keyword: Sub-ultrasonic remote control switch | From:SeekIC

This example describes the sub-ultrasonic remote control switch. It uses pressurized gas-type sub-ultrasonic flute (It is made of rubber with olive and flat round) control. Pinch the ultrasonic whistle and the switch will be closed. The sub-ultrasonic remote control switches can be used to control lighting, exhaust fan and some minor electrical equipment. The ultrasonic remote control switch circuit is composed of the sub-circuit, the power supply, sub-ultrasonic control circuit, bistable trigger and control implementation circuit. Here is the circuit. Components selection R1 uses 1/2W metal film resistors; R2 ~ R11 use 1/4W carbon film resistors use or metal film resistors. C1 uses 400Vpolyester capacitor or CBB capacitor; C2, C4, C5, C7 and C8 use aluminium electrolytic capacitors with thevoltage in 16V; C3 and C6 use monolithic capacitors. VD1 and VD2 use 1N4007 silicon rectifier diodes; VD3 ~ VD5 uses 1N4148 silicon switching diode. VS uses 1W, 9V voltage silicon diode. VL uses φ3mm green light-emitting diodes.



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