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centre tap rectifier

Discussion in 'Electronics Homework Help' started by kingrosekhan123, May 1, 2013.

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  1. kingrosekhan123

    kingrosekhan123

    19
    0
    Apr 14, 2013
    what are the advantages and disadvantage of centre tap full wave recifier.??

    is it better than full wave bridge rectifier???

    please explain in simple words.
    Thanks...
     
  2. duke37

    duke37

    5,364
    769
    Jan 9, 2011
    At low voltages, the 1.2V or so drop in a bridge rectifier is significant so a centre tapped transformer winding is used with only two diodes. The voltage drop is reduced to 0.7V or so at the expense of a slightly bigger and more expensive transformer

    At high voltages the diode voltage drop is not significant so a single cheaper winding is used with fatter, lower resitance wire.

    Its all a matter of optimisation for the particular service.
     
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