In general, by what considerations guide the decision to size a capactior to smooth voltage signals? For example, if I were to use a 3.3V regulator in a circuit design, what size cap should be set in place to ensure a smooth regulated voltage? My attempt at answering my own question would bet to get an appropriate voltage rating (~10V, for this case maybe?) and, presummably, larger capacitance is better? I know that smaller capacitances will discharge very quickly if the need ever arises (i.e. fluctuations in the output voltage require cap discharge). -What keeps a capacitor from discharging back back into the regulator? However, at the same time, I know that discharge rates of capacitors depend largely on the load across its terminals. That being said, is a direct analysis per design in order for capacitance sizing? What about the use of dielectric capacitors versus ceramic (non-polar) capacitors?