rectifying an alternator

Discussion in 'The Projects Forum' started by seayaker, Jan 27, 2009.

  1. seayaker

    Thread Starter New Member

    Jan 27, 2009
    4
    0
    anyone know a simple way to rectify the ac current from an alternator? I built a permanent magnet alternator that needs to be electronically commutated. a full wave bridge only produces the same as a single diode, i'm still loosing half the power. is there a way?
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    You have to have two coils in the alternator with a common center point to be able to do full wave rectification.
     
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    I disagree with this. You can do full wave rectification by using a bridge rectifier with a single coil.

    Seayaker,

    What do you mean you lose half the power?
     
  4. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    I am confused by this statement. By "full wave bridge" you mean four diodes, yes? With their anodes to + and their cathodes to - and the other two connections to the alternator? Because if you turn it sideways it would produce the same half-wave rectification as a single diode...
     
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