please dont direct me to the "answer " on the12volt.com because i dont understand how that would even work. there has to be a certain series of relays that would be able to do this.
2007-12-26 15:45:58 · 3 answers · asked by Steveah 1 in Science & Mathematics ➔ Engineering
Differentiate your trigger with an RC high pass, make a nice waveform with a Schmitt-Trigger (e.g. 74132), trigger a monoflop (e.g. 74LS123). Done.
2007-12-26 17:53:26 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Wire the constant trigger to the coil of an on-delay timer relay, and also to a N.C.T.O. (normally closed, timed open) contact. Set the time delay for 1 second. The output of N.C.T.O. will turn on with the trigger signal and turn off after 1 second.
Electronically, you would accomplish this with a Single-shot.
2007-12-26 16:07:59 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋
in PLC you could use a work bit rung.
2007-12-26 15:50:45 · answer #3 · answered by jabetz1222 4 · 0⤊ 0⤋