High Voltage Bridge Rectifier Diode Dilemma

Discussion in 'General Electronics Chat' started by carder, Mar 25, 2009.

  1. carder

    Thread Starter New Member

    Mar 25, 2009
    2
    0
    I am building a 6kV power supply but I can't find diodes for the bridge rectifier, I have a 6kV, 260mA transformer.
    For this transformer I need 10kV diodes but the only ones I could find have the Average Forward Rectified Current of 350mA.
    Will these diodes conduct lower currents like 260mA?
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,344
    Hello,

    Yes. The given 350 mA is the maximum current allowed, more will break them.
    The 260 mA you stated is within the 350 mA, so they will work.

    Greetings,
    Bertus
     
  3. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
    718
    They will work ok. Please be careful, as you are working with LETHAL voltage and current levels!
     
  4. carder

    Thread Starter New Member

    Mar 25, 2009
    2
    0
    I will be careful
     
  5. donatosd

    Member

    Mar 31, 2009
    13
    0
    can you tell me which diodes you have found? from where?

    thanks
     
  6. Darren Holdstock

    Active Member

    Feb 10, 2009
    262
    11
    Check the diode datasheet carefully - sometimes high voltage diodes are designed to work only when encapsulated in serious insulation (silicone sealant is good at HT, but don't use the stuff designed for bathrooms). The diode terminals can flash over if they're left exposed in free air.
     
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