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
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
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.
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.
This one might be helpful:
http://www.glass-ware.com/tubecircuits/High_Voltage_Regulator.html
Basically identical to what a LM317 does... and with a little redesign one could get away with no extra supply for the regulator.
- Klaus
http://www.glass-ware.com/tubecircuits/High_Voltage_Regulator.html
Basically identical to what a LM317 does... and with a little redesign one could get away with no extra supply for the regulator.
- Klaus
How about the psu-part for Balanced Line Stage / BoSoZ? (with a couple zeners extra)
http://www.passdiy.com/legacy.htm
Arne K
http://www.passdiy.com/legacy.htm
Arne K
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