Hello,
I am trying the circuit found on the following link:
http://www.discovercircuits.com/PDF-FILES/watchdog.pdfI have connected LED indicators to the output (pin 3), and placed another to pin 5. This is to see if I can obtain blinking LEDs. When I powered the circuit up with 5V DC-power supply, the LED (the one connected in pin 5) didn't blink. But when I touched (with my hand) the negative terminal of the Zener diode, the circuit worked fine. The circuit did work fine also when I touched the casing of (or rotating knob of ) the variable resistor (potentiometer).
Can anyone tell me what is going on with my circuit?
Is there any wrong connection in the circuit?
Thanks,
Won
