Bathroom door controlled switch circuit (3)

Published:2012/9/6 22:01:00 Author:Ecco | Keyword: Bathroom door , controlled switch | From:SeekIC

It uses magnetron door switch ( it is composed of permanent magnet and doorframe Reed mounted on the door ) to control the lights and exhaust fan in bathroom, it is easy to use, safe and reliable. The bathroom door controlled switch circuit consists of the power circuit and control circuit, and it is shown in the figure. R1, R5 and R6 select 1/2W metal film resistors; R2~ R4 select 1/4W or 1/8W metal film resistors.C1 selects the polyester capacitor or CBB capacitor with pressure valuebeing more than 400V; C2 and C3 select 16 V aluminum electrolytic capacitors.VD uses 1N4007 type silicon rectifier diode.VS selects 1W, 9.1V silicon voltage diode .VT uses 2A, 400V TRIAC .VLC selects NOC 3020 optocoupler.IC uses CD4017 decimal counting / divider integrated circuit.SA uses the normally closed reed switch.



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