SCR Firing help

Discussion in 'General Electronics Chat' started by petervnzla, Oct 21, 2010.

  1. petervnzla

    Thread Starter New Member

    Oct 21, 2010
    3
    0
    hi..!

    I need guidance. is the first time that I work with SCRs

    I have to build a 3-phase controlled rectifier.

    and don't know how to turn on & off the SCRs.. :confused:


    [​IMG]
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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  3. petervnzla

    Thread Starter New Member

    Oct 21, 2010
    3
    0
    thanks.. i know the theory but no the practice.. so, i need to build a control
    circuit for the SCRs and i don't have idea of what to do..
     
  4. timrobbins

    Active Member

    Aug 29, 2009
    318
    16
    Search on SCR drivers. You will have to do a lot of homework, as a complete operating controller is not simple.
     
  5. petervnzla

    Thread Starter New Member

    Oct 21, 2010
    3
    0
    [​IMG]

    all i need is make a train of pulses for this combination:

    T1 T2 ; T2 T3 ; T3 T4 ; T4 T5 ; T5 T6 ; T6 T1

    and the firing angle have to be variable
     
  6. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    As you pointed out earlier - that's theory.

    Scratch building a 3-phase controller is a reasonable challenge. Unless you are compelled to build this you would save a lot of time if you buy a dedicated control board off the shelf.
     
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