So, I've been searching this site (and the rest of google) for a couple days, and haven't really found anything that meets what I'm looking for. I'm a soldering tech and am good with electronics, but I don't know enough about whats out there to build the circuit diagram and parts list myself. So here's my problem.....
I need a Timer delay circuit that can control a standard automotive relay for an adjustable amount of time ranging from 1-10 minutes (roughly). This unit will be activated by a momentary push button. The auto relay will be powering heated mirrors on my truck. So...in order of events...
1) push momentary button
2) timer circuit energizes, turns on a LED to show operation, and sends power to the auto relay, auto relay turns on mirror heat
3) Timer circuit turns off and de-energizes auto relay after "X" minutes.
Yes, I could buy a "defrost" switch from a parts store, but they're in the neighbor hood of 50-200 USD. Not worth it when I know its a simple enough circuit, and the parts are cheap. Plus it gives me something to keep my soldering skills up to date.
Thank you all for any help.
I need a Timer delay circuit that can control a standard automotive relay for an adjustable amount of time ranging from 1-10 minutes (roughly). This unit will be activated by a momentary push button. The auto relay will be powering heated mirrors on my truck. So...in order of events...
1) push momentary button
2) timer circuit energizes, turns on a LED to show operation, and sends power to the auto relay, auto relay turns on mirror heat
3) Timer circuit turns off and de-energizes auto relay after "X" minutes.
Yes, I could buy a "defrost" switch from a parts store, but they're in the neighbor hood of 50-200 USD. Not worth it when I know its a simple enough circuit, and the parts are cheap. Plus it gives me something to keep my soldering skills up to date.
Thank you all for any help.