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Power Supply Filtering

The rectified waveforms still have a lot of ripple that has to be smoothed out in order to generate a genuine DC voltage. This we do by tacking on a low-pass filter. The capacitor value is chosen in order to ensure small ripple, by making the time constant for discharging much longer than the time between re-charging.

Doug Gingrich
Tue Jul 13 16:55:15 EDT 1999