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This is standard practice for domestic power supplies now, the 'switch mode power supply' and even some larger power supplies in factories.  I've always wondered whether there was much benefit to the 16.7Hz supply given the larger amount of magnetic material required.

The better waveform thing is probably a reference to power factor correction, which can be added fairly easily to switch mode supplies.

by njh on Sun Sep 30th, 2012 at 09:43:29 PM EST
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