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Rc time constant calculator6/15/2023 When the switch is in this position, the cap is charging and there's going to be, there's going to be a time associated with how long it takes this capacitor to charge, and then when the switch goes into this position like it is over here, this is the same circuit, it when it goes into this position now the applied voltage stops and now the capacitor is discharging. In the circuit below, we are charging the cap with a changing DC source which effectively is a notice, a rectangular wave. RC time constants define the time it takes for a capacitor to charge. Now we're going to be looking a waveform that would look more like this, a rectangular or a square wave. ![]() What we looked at in previous sections was we were considering a sinusoidal waveform looks like this. The waveshapes associated with sinusoidal waveforms is much different from that of rectangular. ![]() Pulse circuit response is important to understand in digital applications as these tend to use pulsed or rectangular waveforms. We are in section 7-4, and we're continuing with pulse circuit response.
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