Re: R1155 Modern Power Supply
Capacitor-input rectifier-filters do peak rectification to a first approximation all the time.
Choke-input rectifier-filters give a DC output equal to the mean of the rectified AC... appreciably less than the peak rectified voltage of the capacitor input job. BUT if the current demand goes low, the voltage rises to the peak rectifier value. So to make a choke input job give a reasonably stable output voltage, there is a minimum current which must be taken. It has to be enough that the rectifier never drops out of conduction over its full half-cycle. This forces you often into larger choke inductances and larger cores than you'd like. Otherwise the choke input job is kinder on rectifiers passing smoother less concentrated current waveforms through them.
DAvid
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