- #1
Ry122
- 565
- 2
I have a circuit in which I have a constant voltage passing through until I hold down on a button at which point the voltage drops to zero. When I let go of the button the voltage returns to normal. I need to add to the circuit a switch which activates when a voltage of zero is passing through and remains turned on until a voltage of zero is again passing through.
How Can I do this?
How Can I do this?