Quote:
Originally Posted by ddunk80
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...the original post (OP) is asking about how to "filter/smooth" AC-voltage into pure DC-voltage.
...there are three ways to do it: (1) capacitor (RC) filter, (2) inductor (RL) filter, and (3) combined capacitor/inductor (RLC) filter.
...capacitor filters can charge to peak
voltage, but can't "hold" that voltage, ie: BIG capacitor.
...inductive filters can provide a steady
current, but can't "hold" that current for ever; ie: BIG inductor (choke, etc.)
...combined RLC filter optimizes the two above and provides the best compromise DC-voltage, but there will always be a small amount of residual AC-"ripple."