mohsen 2012
Member level 4
Hello guys , i build this timer circuit :
http://www.electronics-lab.com/projects/oscillators_timers/008/002_Schematic_th.png
**broken link removed**
the problem is when i set the jumper at 120 second the relay switch turned ON during a few seconds only !!
i replace the variable resistor with a 3M9 fixed resistor but the circuit work for a 5 seconds !!!
the same problem with all jumpers when i set it to 2 hours it work for a 1 minute!!
Please help me and thanks
http://www.electronics-lab.com/projects/oscillators_timers/008/002_Schematic_th.png
**broken link removed**
the problem is when i set the jumper at 120 second the relay switch turned ON during a few seconds only !!
i replace the variable resistor with a 3M9 fixed resistor but the circuit work for a 5 seconds !!!
the same problem with all jumpers when i set it to 2 hours it work for a 1 minute!!
Please help me and thanks
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