Purpose of the cap in this RC Debouncer circuit...

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  • Spork Schivago
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    Re: Purpose of the cap in this RC Debouncer circuit...

    I think I might understand now. I was forgetting about the anode / cathode on the cap. When the switch isn't closed, the circuit is broke, the cap can never charge, right? VCC can't go through the caps anode terminal and then down through the cathode terminal to get to ground, right? The cap would only charge up when the switch is closed, is that right?

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  • Purpose of the cap in this RC Debouncer circuit...

    Hello,

    I'm trying to learn how to debounce my push-button switches. I'm looking at the hardware way of doing it right now. I've attached an image but I'm curious as to how the cap is actually working in this schematic.

    When the switch is closed, wouldn't VCC just travel through R1 and R2 to the NOT gate?

    I know that electrolytic caps block DC voltage but allow AC voltage to pass through and I understand why. So, in this diagram here, the cap would charge up and if the circuit was broken, the cap would provide DC and pass it through the NOT gate, right? But the circuit with the cap never gets broken, right? How does the cap actually help to do away with the bouncing effects of a switch?
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