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+/- 85 volts symmetrical power supply
+/- 85 volts symmetrical power supply
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Old 22nd May 2010, 09:34 PM   #1
xeclipse is offline xeclipse  Kenya
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Default +/- 85 volts symmetrical power supply

Hi,
am planning to build a 300 watts mosfet power amplifier,it requires a +/-85 volts symmetric power supply.I've never built a symmetrical power supply before,i recently leart of the simple symmetric power supply consisting of a center tapped transformer,a bridge rectifier and two filter capacitors.
My question is:is this setup suitable for a 300 watts power amplifier or does it need some sort of regulation?If so,what power supply schematic would be appriate for this amplifier?
Thanks.
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Old 22nd May 2010, 09:49 PM   #2
nigelwright7557 is offline nigelwright7557  United Kingdom
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Most solid state amplifiers dont need any regulation.
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Old 22nd May 2010, 09:57 PM   #3
qsa is offline qsa  Germany
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Quote:
Originally Posted by xeclipse View Post
Hi,
am planning to build a 300 watts mosfet power amplifier,it requires a +/-85 volts symmetric power supply.I've never built a symmetrical power supply before,i recently leart of the simple symmetric power supply consisting of a center tapped transformer,a bridge rectifier and two filter capacitors.
My question is:is this setup suitable for a 300 watts power amplifier or does it need some sort of regulation?If so,what power supply schematic would be appriate for this amplifier?
Thanks.
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Quasi was starting this thread in 2004

6 years later its a Professional AMP with a lot of features and this MOSFET amp sound really great

have designed PCB 237 x 80 mm and add to the original QUASI Design some improvement and features for the DIY community

+/- 85V you can get up to 1000W @ 2 ohm

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File Type: pdf N-VMOS schematic Beta 3 22.02.2010.pdf (33.4 KB, 177 views)
File Type: pdf N-VMOS PCB Layout Beta 3 22.05.2010.pdf (153.3 KB, 113 views)

Last edited by qsa; 22nd May 2010 at 10:02 PM.
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Old 23rd May 2010, 06:29 AM   #4
xeclipse is offline xeclipse  Kenya
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Thanks Nigelwright,so you mean the simple circuit is ok for the power supply?
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