I would like to have a pushbutton switch to turn a circuit on, but have an on-delay of about 5 to 10 seconds before the circuit "turns on". I know I can use a resistor and capacitor with a transistor to ramp up the voltage, but I would like the circuit to go from off to on rapidly (a small ramp is ok) when the time interval has elapsed. I.e., one would have to continue pressing the button for the entire time before the circuit turns on.
If the pushbutton were released before the time elapses, I would like it to stop, but pushing the button again a short time later is not that important if it starts (almost) where it left off or starts the time completely over. If there were a few minutes delay before pushing the button again, I would like the time to start from the beginning. The voltage is 24VDC and will be a very small current. On-delay relays are much, much too large and expensive for this application.
Thanks,
Dale
If the pushbutton were released before the time elapses, I would like it to stop, but pushing the button again a short time later is not that important if it starts (almost) where it left off or starts the time completely over. If there were a few minutes delay before pushing the button again, I would like the time to start from the beginning. The voltage is 24VDC and will be a very small current. On-delay relays are much, much too large and expensive for this application.
Thanks,
Dale
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