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Relay timer switch

2015-09-27 07:54  
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Relay Timer switch

Relay_timer_switch.

??? Fig.1 ??????? ???? ????????????? ? ?????? ???????? ?? ????????? ??, ???? ?????? 100 ?????????????, ???????? ??? ???? RL1 ?? ????????? ???? ??? ??? ?????? ??? ??? ???? ???????? ???????????, ??? ??? ?????? ??? ?????????????? ?? 12V ??? ???????. ??? Fig.2 ??????? ??? ??????? ?????????????, ?? ?? 555, ?? ????? ???????? ?? ????????? OFF ??? RL2, ???? ??? ?????? ???????????? ??????, ?? ??? ???????????? ???????? 6-60 ???????????? ??? 1-10 ?????

In Fig.1 see a 100 second delayed turn ON relay RL1 switch, if plug power 12V in circuit. In Fig.2 see a two range 6-60 second and 1-10 minute auto turn off relay timer circuit, with 555.

Part List

R1=1 MohmsC4=100nF 63VIC2=LM555
R2=330 KohmsC1-2=100uF 16VRV1=470 Kohms pot.
R3=680 ohmsC3=1000uF 16VRL1-2=12V >120 ohms Relay
R4=2.2 KohmsD1=1N4148S1-2=Push button n.o
R5-7=4.7 KohmsD2-3-4=1N4001S3=2X2 switch
R6=47 KohmsQ1=BC214
R8-9=22 KohmsIC1=LM741

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