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  1. AG-PPI

    Suggestions Needed: Thermal switch on live MV heatsink

    I am currently working on putting together a design draft for an MV inverse-parallel thyristor controller assembly. The assembly itself would be running at 7920Vac nominal, 50Hz 90A. The thyristors we will be using are 'hockey puck' style, single side cooled on a suitable aluminium heatsink. Our...
  2. AG-PPI

    Small AC-DC bridge popping

    My companys test department needs a DC power supply to give 110Vdc to power a DC relay for testing purposes, and they don't want to buy a purpose built one. Up until now our test department has been chaining a couple of 30V dual output DC power supplies in series to get the voltage needed but...
  3. AG-PPI

    3ph Parallel Thyristor Rectifier Not Sharing Current

    Good afternoon all, I have a problem which has really melted my brain this afternoon and I am hoping someone can offer some insight. My company had recently designed and built a three phase thyristor bridge rectifier for our customer. One of our customers requests was that each thyristor had...

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