CDI Circuit

Discussion in 'The Projects Forum' started by fixit1ddh, May 5, 2011.

  1. fixit1ddh

    Thread Starter New Member

    Apr 29, 2011
    2
    0
    Have a CDI circuit that id like to build but i dont know what parts i need to make it work. I know it is Thyristor type.[​IMG]
     
  2. debe

    Well-Known Member

    Sep 21, 2010
    947
    184
    Heres a circuit I know works in this aplication. S is an SCR in this circuit.
     
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    • CDI.jpg
      CDI.jpg
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  3. HallMark

    Member

    Apr 3, 2011
    89
    5
    I think now a days in Bikes they are using some microcontrollers in CDI.
    # i heard this somewhere.
     
  4. fixit1ddh

    Thread Starter New Member

    Apr 29, 2011
    2
    0
    I know that the excitor coil charges the capacitor, Then it also triggers the spark at the right time, This is on a chainsaw and there is no room to put a separate trigger coil. This cdi is no longer available used or new. It`s from around 1978. I have the excitor coil and it`s fine but cdi is dead tried to cut it apart but it`s all like epoxied up and everything just broke but i found the schematic for the cdi and thought someone might know what parts as far as Resistance i would need to make it work.
    Thank You
    Dave
     
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