Hi all,
Ive been asked to make a circuit that operates a relay for a selectable amount of time.
Using dials like that from a decade box i hope to be able to set the time for how long the relay is 'on' before returning to its 'off' state, it should be operated using a push switch regardless if the switch is still pressed down.
The trouble is I cant find any type of circuit where a timer is controlled by resistance, or multiple resistance dials, hopefully i can make it in the range of microseconds to 10 seconds.
any help please?
Ive been asked to make a circuit that operates a relay for a selectable amount of time.
Using dials like that from a decade box i hope to be able to set the time for how long the relay is 'on' before returning to its 'off' state, it should be operated using a push switch regardless if the switch is still pressed down.
The trouble is I cant find any type of circuit where a timer is controlled by resistance, or multiple resistance dials, hopefully i can make it in the range of microseconds to 10 seconds.
any help please?