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The fridge auto deodorizer circuit

2014-11-06 11:07  
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The fridge auto deodorizer circuit
Working principles The equipment consists of the light control, time delay circuit and the passive ion generator. The equipment is controlled by the fridge internal lighting lamp. When the door is open, the lamps are on, and the LED VT1 is conducting, the 2-pin of the time-base circuit IC1 is in a low LEV immediately, the 3-pin is outputting a high LEV quickly, the dual-way controllable silicon VS is triggered and conducting, and the passive ion generator is stating to work. The working voltage of the light control and time delay control circuit is generated after the 220V AC voltage is stepped down by C1, rectified by VD1, stabilized by VDW and filtered by C2.