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Reducing / Limiting power supply output.

Discussion in 'Electronic Design' started by Will, Jun 25, 2007.

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  1. Will

    Will Guest

    Is it possible to restrict or otherwise limit the power from a high
    voltage power supply? Specifically:

    "Units need 18-24V DC and output a maximum of 1300 VDC at about 30mA
    short circuit current"

    Is there a way I can get this down to between 700 and 900 volts? Does
    anyone know of any common consumer products that I could purchase and
    remove the power supply from that would be in the 700 VDC to 900 VDC
    range? The only thing that comes to mind for me is a bug zapper but I
    have no idea what power levels are involved yet?

    Thanks in advance,
  2. D from BC

    D from BC Guest

    Maybe fix with:
    R attenuator with resistors with proper voltage ratings.
    Shunt current regulator

    Or how about a new circuit?
    Switcher (smps design) with step up transformer
    Cap/diode multiplier running of line voltage. (no isolation)

    For better suggestions, mention load detail. 700VDC @ what I?
    D from BC
  3. Mook Johnson

    Mook Johnson Guest

    How bout three 160 - 200V 5W zeners. as long as your load is below 30mA
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