Check these pictures,
Dear friend
Thanks very much for the circuit. the schematics is very faint wud be happy if u cud send me aclear copy.
i would also like to tell u that i want to use it to switch a floresent tube which works on 230 volts AC.
Will the convectional relay create spikes or transients while making and breaking
can i use a solid state relay, if so how
Also that if there is a trigger again it shud not effect the fuctioning or rather reset the circuit to off position when once triggered.
regards
balaji
ps. note i am going to try out the circuit once i receive yr msg
tks
For 20minutes you need
R1= 1MOhm
C1= 1000uF
I'm using this circuit as a phone limiter.
i.e: the phone line is cut after a certain time.
The output circuit is just a transistor is 2N3904, relay 5V and a biasing resistor 330Ohm.
Note:
put your IR sensor instead of the square wave generator.
Hope this helps, please tell me if the picture isn't clear.