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Old 29th November 2006, 10:58 AM   #1
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Question high quality 10A dual voltage regulator

Hi guys,
i need high quality dual voltage regulator for class A/B amplifier ............voltage between +/- 30-36V...10Amps would be nice...

any suggestions ?!

p.s. it must be high quality....
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Old 29th November 2006, 12:31 PM   #2
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High quality is a bit vague. Have you any more data than 10 A? Input min-max voltage? Output impedance? Regulation properties? Speed? Short circuit protection? Over heat protection? Etc.

Is LM338 good enough for you?
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Old 29th November 2006, 12:51 PM   #3
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I have a very good quality amplifier 50W working in class A/B and i want to have between 30-36V regulated dual voltage power supply.....good quality one .... but not LM338
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Old 29th November 2006, 01:11 PM   #4
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Could you tell me which parameter of the LM338 that isn't good enough?
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Old 29th November 2006, 02:40 PM   #5
edl is offline edl  Hungary
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Voltage reference + fault amplifier (opamp) + pass elements.
A TL431 or similar ref., an opamp, and a pass darlington will do the job.
Let's try it!
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Old 29th November 2006, 02:41 PM   #6
edl is offline edl  Hungary
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Quote:
Originally posted by peranders
High quality is a bit vague. Have you any more data than 10 A? Input min-max voltage? Output impedance? Regulation properties? Speed? Short circuit protection? Over heat protection? Etc.

Is LM338 good enough for you?

Sunrise, please answer Peranders's questions, otherwise we cannot help you!
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Old 29th November 2006, 04:25 PM   #7
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i don't like LM338 - if i wanted to use LM338 i would use it long ago - but i don't like it - i like discrete better - and also something better than LM338
i wanted somebody to tell me if found some nice very good quality voltage regulator that can supply power amplifier of 50W and voltage output of 30-36V dual .....how difficult that answer can be....i don't want to talk about parameters - this and that - i only want to find very good schematic that will SOUND good when used to power the power amplifier.....

in short i need the best i can find - i know that this is relative but i need opinions - that this or that one is the best for power amps ...if you know what i mean - so that i can decide which one to use...what to use...

regards
sunny
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Old 29th November 2006, 04:53 PM   #8
audioPT is offline audioPT  Portugal
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Sunny,

If you realy want to go passive, read this Glenn Baddeley's page, buy the components needed and put your hands on work!...
Better than this is impossible!

As you don't like LM338's specs and quality...
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Old 29th November 2006, 07:06 PM   #9
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Default This one is very good..fast response to 20 amperes variation


Hardly tested since 1975 when was used, by the first time by Ampex Video Tape machines.

As everything in our audiophile word, has room enougth to customization, as you can change things to adapt your own needs.

For sure, the output will use a lot of transistors in parallell to match higher current needs...some modification may he needed to match audio performance.

Everybody loves Sunrise!

regards,

Carlos
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Old 29th November 2006, 07:12 PM   #10
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Default thanks AudioPT and Carlos,

Oceana power supply is massive - thanks again....
Carlos - very nice- thank you..
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