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
R1=1 Mohms C4=100nF 63V IC2=LM555
R2=330 Kohms C1-2=100uF 16V RV1=470 Kohms pot.
R3=680 ohms C3=1000uF 16V RL1-2=12V >120 ohms Relay
R4=2.2 Kohms D1=1N4148 S1-2=Push button n.o
R5-7=4.7 Kohms D2-3-4=1N4001 S3=2X2 switch
R6=47 Kohms Q1=BC214
R8-9=22 Kohms IC1=LM741
Source : http://users.otenet.gr/~athsam/relay_timer_switch.htm
Thank you.
Related Links
More circuit about relay switch
More circuit Timer Switches
More clock-timer
Timer with buzzer and optocoupler by IC 4060
Long Time Delays by CD4040
Simple Timer by CA3140 + NE555
ZN1034E Timer
555 Timer 5 to 30 Minute
555 Asymmetric Timer
This entry was posted on Wednesday, August 29th, 2007 at 11:39 pm and is filed under 555, 741, Electronic Control, Timer.
