Body induction music fountain switch circuit diagram

Published:2011/6/24 3:32:00 Author:Nicole | Keyword: body induction, music, fountain switch | From:SeekIC

The circuit is composed of inductive switch, monostable delay, music circuit and relay control circuit, the figure is as shown. A inductive switch is made of metal sensor chip M and FET VT1(3DJ6). When somebody closes M chip, VT1's drain-to-source resistance increases, IC1's 2 foot level drops(≤1/3 VDD), 555 is set and it is high level, relay K pulls in, the contact turns from off to closed, the electric motor of water pump's power supply is connected, the fountain starts to spray water. At the same time, the music integrated circuit is triggered, and it sends out euphonious music. A monostable trigger circuit consists of 555 and R3, C2, the temporary stability duration time is td=1.1R3C3.



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