In an earlier post i discussed about the effects of voltage derating on a capacitor. From here i measured the output with DC and AC applied to a highpass filter and found the cutoff frequency with the applied voltage and calculated the capacitance change from these results.
Now i wish to calculate the capacitance from my input and output with a known resistance. I know the formula for the reactance of a capacitor, and if i recall correctly a Highpass filter is a voltage divider, where it attenuate lower frequencies. With this knowledge i was able to solve for the capacitance.
What seems to the issue with my calculation is, the capacitance calculated from this seems to be double or even more than its normal value. I am not sure if my measurements are wrong, since the results are the same on different measurement equipments.
Any suggestion on what might could have gone wrong?