Board Thread:Questions and Answers/@comment-76.125.214.168-20130515044155

I have a stable nuclear reactor built, but I need to know when the cells run out so I can run a planned downtime and refill the reactor with new cells. I tried using an EU detector cable, but the reactor seems to toggle on and off rather than provide constant power draw, meaning I can't tell whether it's just toggled off for a second or is down for a cycle. have I got any choice here other than a redstone pulse-sustainer circuit (get power from detector cable, maintain signal long enough that detector cable should toggle back on if it's going to. If it doesn't toggle back on, go into shutdown). I'm trying to avoid installing any new mods.

tl;dr: I need a way to turn a pulsed redstone output with a specific period into a sustained redstone output that turns off if the pulse goes too long without pulsing. 