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Full Wave Rectifier: (fig.18)
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fig. 18
Center tap transformer. It is more efficient and supplies current in both half cycles.

      z   In the first half cycle D1is forward biased and conducts. D2 is reverse biased .
      z   In the second half cycle D2 is forward biased, and conducts.
     When D1 conducts, then full secondary voltage appears across D2, therefore PIV rating of the diode
should be 2 Vm.
Bridge Rectifier : Fig 19
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Posted in Posted by waytofeed at 9:40 AM