I'm looking for some advice on a design project I'm working on. Basically I need a circuit with an adjustable delayed pulse of approx5-50ms as well as an adjustable pulse width of 8-11sec. I'll actually have to build three of these, the idea is I need to activate three individual devices at different times and have them deactivate in reverse order approx 10 seconds later with one control source.
I'm think I can accomplish this with a couple of 555 timers. I'm just probing around to see if someone has a better idea. I've had some succes with a similar circuit using 74LS123's but this situation is different in that I need the 10 sec pulse width. Any input is appreciated. Thanks in advance.