The timely disinfecting, deodorizing and sterilizing circuit of 555 fridge

Published:2011/6/13 21:29:00 Author:Borg | Keyword: disinfecting, deodorizing, sterilizing | From:SeekIC

This timely disinfecting, deodorizing and sterilizing circuit of fridge can self-start and then generate ozone and air negative ions when the fridge door is open, and disinfects, deodorizes and sterilizes the inside of the fridge, when the time is over, it will automatically stops working, which is effective.The deodorizing circuit includes AC step-down voltage-steady circuit, light control timer switch circuit, high frequency oscillator and high frequency electricity discharger, etc, see as Figure 13-24. The AC current is firstly stepped down by the capacitor of C1, and then is filtered by rectifier of C2 after passing D1~D4, finally comes out from the 3-terminal stabilizer as a +12V voltage and provides with working power supply for IC2 and IC3.



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