Thomas Scherer
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Active Rectifier

Diodes make admirable rectifiers and are simple and economical, but unfortunately they also exhibit forward voltage drop, and hence also power loss. The losses in ordinary silicon diodes are of the order of 0.7 W/A to 1 W/A, and for Schottky diodes the losses are in the region of 0.4 W/A to 0.5 W/A. In a bridge rectifier these losses are doubled, as the current path is always through two diodes in series.
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