hello .not sure if this will make sense, but here goes:
i am wondering if there is a simple solution for holding/sustaining a 5volt trigger signal? for example: a control voltage of 5v+ might be input into a circuit but only be sent for a short time, maybe just a 10ms hold time before it cuts out.
One way to sustain or hold that trigger could be through latch relay, but a mechanical latch relay takes time to latch on,so i wonder, is there by chance a circuit that can hold/sustain a 5v volt control signal? Maybe a capacitor and resistor combination ? with a variable resistor to vary the time the latch holds for?
i am trying to build a little circuit that listens out for a control signal and turns on a light and also turn on various other circuits via fast srr relay, but my control signal is only present for a short time ( to short a time), i really need the signal to hold/sustain and be ultra fast in its response, so a mechanical latch would be to slow (3 ms or more) where as, a transistor/capacitor type circuit can respond within a few nano seconds. I thought there might be a common type of circuit to deal with this type of problem?
maybe a timer ? So that when the control signal is sent the timer instantly outputs a 5volt signal for the desired length of time ( using a variable resistor or changing the size of a capacitor?)
hope this all makes sense thanks for any help : )