I am trying to create an electronic circuit, that is sort of a "not?" When the switch is pushed, nothing happens. When the switch is released, after a momentary press, then the Led would light. This will drive a simple light, and finally the entire process would be reset with a second button. The reset can happen at the momentary press of switch #2.
A friend of mine at work seemed to think this would be a good application for a 556 timer chip, which I gather has two 555 timer circuits in it, which are somehow linked, and the output of one of them controls the start of the second timer. I'm not exactly sure how you would apply that to my project, but I suppose it makes sense, the first button would trigger the timer circuit, for as long as button #1 is pressed, and then AFTER that button press, trigger the second timer, which would go on forever until a signal from Switch #2.
I assembled and created this circuit. I don't currently have a switch that does what #2 does, but with a jumper wire, I can simulate it. It doesn't work. 🙁
My friend from work seems to think it was in my description – But I re-read the description and it's pretty straight forward.
- LOAD TO BECOME ACTIVE WHEN SWITCH #1 IS RELEASED.
- SWITCH #2 TURNS OFF THE POWER TO THE LOAD.
Doesn't SOUND that complicated to me, although I wasn't able to figure out a way to make it work. In my mind, logically, sure, you have a latch that's activated by the release of the first button, and is de-latched by the second. Easy peasy!
Tons of Thanks in advance guys! (and/or gals)
Best Answer
Bradman175 is on the right track, but perhaps a diagram that shows what he's talking about would help:
simulate this circuit – Schematic created using CircuitLab