A simple Continuous to Momentary Contact Relay Circuit
by Mike Holderfield, Dothan, AL
This circuit was designed to convert a continuous closure to a
Or, it could be a transmitter re-start circuit (after a power
failure) for those that don't have one.
Here's How it works:
Closing the switch fires the relay. The R-C circuit times out and the relay closure is then opened.
The closure time of the circuit is determined by the value of the capacitor. 1000 uF should give a .X second pulse. Varying the value will increase or decrease the timing. For example: at 500 uF, the circuit will drop out at .0X seconds.
Our thanks to Mike Holderfield for sharing this circuit.