Re: Building a psu for linear amplifier

Ripple voltage across smoothing capacitors can be calculated from the amount
by which they discharge, at the DC load current, during the time of a
half-cycle of the power supply frequency.

For half-wave rectification, ie., a single diode plus capacitor,  the
capacitors are charged up once per cycle and the capacitor discharges into
the DC load during the period of a whole AC cycle.

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