Need Help with + _ 90-100 volt regulated power supplies

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wrich22

Member
2007-02-14 1:09 am
Louisville, Ky
  • #1
    I am currently rebuilding two Hafler DH-500 amps, using toroidal transformers, Fred rectifiers and Musical Concepts PA-3E boards
    with black gate caps, and 4 - 39,000 uf main caps per amp. To be used to bi-amp my SDA-SRS speakers which I just purchased on e-bay and have since reworked with new mils resistors and Polyproplyene caps

    I am looking for a state of the art power supply -+ 95 volt for the
    front end, low level and drivers. I plan to leave the Mosfets unregulated.

    I have built several power supplies, based on Boak, Sultzer and Jung designs . Using NE-5534 and LM317-LM337's and floating zener designs, for other Hafler, Dynaco 416, Leach Super Amps, and the Marsh pre-amp about 20-25 years ago. But haven't done much since then

    What is the power supply design that will give me the best
    results, for my new system. Also I need advice regarding removing
    the resistor that separates the Mosfet drivers from the front end

    My Initial aproach is use the LM317 and LM337 and float them
    using a Zener String using seperate 5-10 volt transformers coupled to the main transformer to give a voltage boost ,rectify and regulate all with a common ground

    I would appreciate any advice that anyone has.

    Thanks,

    Bill (wrich22)

    Louisville, Ky
     
    G

    Gordy

    Disabled Account
    2006-11-02 6:15 pm
  • #2
    For a high voltage regulator have a look at

    Fig. 11 in Linear Technologies Application Note 2, August 1984, Performance Enhancement Techniques for Three Terminal Regulators.

    Also

    National Semiconductor Linear Brief LB-47, March 1980, High Voltage Adjustable Power Supplies.

    For more advice on the amp consider a posting in the Solid State section of the forum.

    Good luck,
    G.
     
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