Bathroom door controlled switch circuit (1)

Published:2012/9/6 21:42:00 Author:Ecco | Keyword: Bathroom door , controlled switch | From:SeekIC

It uses magnetron six switch to control lights and exhaust fan in the bathroom, and it has strong practical applicability. The bathroom six control switch circuit is composed of the power circuit and control circuit, and it is shown in Fig.R1 ~ R6 select 1/4W carbon film resistors.RP uses small membrane potentiometer ( it is used to adjust the delay time of the exhaust fan ).C1, C2 and C4 select aluminum electrolytic capacitors with voltage in 16V; C3, C5 ~ C7 choose polyester capacitors.VD1 ~ VD6 choose 1N4007 silicon rectifier diodes.V1 and V2 select S9013 or S8050 silicon NPN transistors.VT1 and VT2 selects Triacs with current in 3A and voltage being400V or more.ICl uses LM7812 three-terminal integrated voltage regulator; IC2 uses CD4027 digital integrated circuit; IC3 uses NE555 time-base integrated circuit.T uses 3 ~ 5W power transformer with 12Vsecondary voltage.EL can choose 15 ~ 60 W lamp.



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