b1mmuo27
Member
I am trying to make a timed switch with a 555 timer circuit & a latching 2 pole double throw relay. Here's what I need it to do. I have a monitoring circuit with very little current on it. Let's say it will be normaly closed. When the timer circuit is started it needs to count to 5 seconds & open this circuit. A second pulse directly to the second coil in the relay will flip the relay closed again without delay. Voltages for all this are 12vdc.