One-touch switch circuit diagram

Published:2011/8/17 20:24:00 Author:Jessie | Keyword: One-touch switch | From:SeekIC

The circuit diagram is as shown, HD is atubular neon bulb, photoconductive resistance RG and it composes of homemade photoelectric couplers , and forms touch signal input pathwaywith touch electrodes M, R1. CD4017's Q1, Q3, Q5, Q7, Q9 odd output terminalconnects diode V2 ~ V6 respectively, when one of them output high electricity, V8 is connected and trigger bi-directional thyristor VT to connect, load accesses to socket and works,while Q2, Q4 even output terminal impending; Conversely, whenthe even output oneis high electricity, V8, VT are all disconnected, socket load disconnects, when the touch switch just connects,since C1, R4's differential effect, CD4017 automatic reset, socketis de-energized.



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