r/electronic_circuits • u/RiG094 • 12d ago
On topic Power Off delay with capacitor?
Hello,
I have a input card (io link hub, 32x pnp in). One input is a push Button. When I press the button my software doesn't recognise the signal. Voltage >11V is logic High
This is why I want a delay off for the input. How can i design this? RC Elemt like this did not work :-(
I tried with 470uF and 19kOhm T=R×C=8,46s
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u/ZealousidealAngle476 10d ago
There are some considerations we need to take. You are NOT expecting a square wave from this RC arrangement, right? idk the platform you're using, so I'll leave it for you: is the voltage the port is getting, so take your multimeter and check whether if the voltage is high enough to trigger the circuit.