Brand new here, lots of great info on the site! I am trying to build what I thought would be a simple circuit. I am try ing to come up with a way to apply ground to a wire, remove the ground, then re-apply it as a latched. I have 12 volts to trigger the circuit. Any ideas are greatly appreciated!

 

Not sure I follow.... apply ground to a wire (what should happen at that point?), remove the ground (again, what should happen at that point?, then reapply it as a latched (what are you latching?)

If you are talking about latching a relay, for example, by applying a momentary ground, that would clarify a lot.

 

I have a 12 volt wire that I need to use to trigger a circuit that will supply a ground output. But the ground output needs to go on/off/on (or ground/open/ground) and stay on until the 12 volt is removed.
Thanks for any insight you may have.

 

What kind of timing is involved. How long are the on/off/ periods before the final ON?

 

Can be very fast, or up to a second or two. Timing should not be much of an issue.

 

How much current is involved in the output ground? First thought would be to use a couple of NE555 timers daisy-chained and then possibly drive a relay with their output.

 

I will try to get more specs, thanks for your help.