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I'm trying to evaluation the voltage of an RC circuit as it is dissipating a stored charge. Actually trying to do this under two different situations.

The first is let's say the circuit has reached steady state for a given input voltage, Vo. Now I reduce the voltage instantly to some value V1 greater than zero, but less than its original value. I assume it would resemble some sort of exponential decay function, like e^(-t/tau), but how would Vo and V1 factor into the equation?

Okay, now take the same circuit. But let's say instead of using the step function in the previous example for the voltage, it now decreases linearly over time, like V(t) =-3 Volts/min. What would the response equation look like now?

Hopefully that makes sense, I've been wracking my brain over this for the past couple days.

TIA

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# Equation for dissipation of a capacitor

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