Timer switch circuit


Posted on May 16, 2012

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.


Timer switch circuit
Click here to download the full size of the above Circuit.

Part List 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




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Cmos-oscillator
File Alarm with LDR Sensor
Broadcast circuits
synopsis
LV8741V PWM stepping motor driver electronic project circuit design
1996 GL1500 modulators interfering with audio
Speed of Light with Nanosecond Pulsed 650 nm Diode Laser
8051 Development System Circuit Board 3



Top