Thyristor Load Placement

Discussion in 'General Electronics Chat' started by Audiogeek, Mar 4, 2008.

  1. Audiogeek

    Thread Starter New Member

    Mar 4, 2008
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    I have seen thyristor triggering circuits that have the load placed in either the "anode" or "cathode" side of the thyristor. Are there any advantages/disadvantages as to load placement?
     
  2. studiot

    AAC Fanatic!

    Nov 9, 2007
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    Apart from the fact that your doc shows a triac not a thyristor there is no difference from the point of view of power control.

    However there is a difference from the point of view of safety. The first diagram shows one side of the load connected to earth or neutral, the second shows it connected to line or floating. Consider exposed terminals under fault conditions.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
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    I've extracted the image from your document file and attached it.

    I'm done for the day - I'll leave it up to someone else to answer your question.
     
  4. hgmjr

    Moderator

    Jan 28, 2005
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    I think that the term thyristor is used to refer to a class of devices of which the triac, scr, and diac are a few of the more familiar members.

    hgmjr
     
  5. thingmaker3

    Retired Moderator

    May 16, 2005
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  6. Lembit

    New Member

    Nov 13, 2007
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    for the SCR nor the load it does not make any difference actually, if you connect it to the anode or cathode side. Only difference is how to connect the control block of the SCR. For example to control 4 SCR-s in the bridge, you'll have three different pulse circuitries with isolated commons.
     
  7. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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