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Old 20th April 2016, 08:22 AM   #1
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Default Multiple low voltages required

Noob questions I'm afraid.

I have a minidsp (4.5-24v), B1 pre (18-24v) and a boozehound labs phono stage (12-24v) requiring power. I need some help on the setup. Can/should I use

A) 1 transformer & 1 regulator at a voltage they are all happy with ie 18-24v
B) 1 transformer with 3 regulators on one secondary
C) 1 transformer with 3 secondaries and 3 regulators
D) 3 transformers with 3 regulators

I'm looking at something like this H-PS-1 low-voltage regulator for regulation duties

Thanks in advance
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Old 20th April 2016, 11:24 AM   #2
AndrewT is offline AndrewT  Scotland
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B) is OK and will be the cheapest way to arrive at three different voltages from the one transformer secondary.
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Old 20th April 2016, 01:02 PM   #3
Pafi is offline Pafi  Hungary
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I would choose C, because this way you can avoid internal ground loop problems easily.
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Old 20th April 2016, 06:12 PM   #4
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digital ( dsp ) and analog should have they'r own supply so C is fine , and D is best

and regulator's should have the lowest noise as possible , for the same money you'll find betters regs ;-)

.

Last edited by fabrice63; 20th April 2016 at 06:16 PM.
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Old 20th April 2016, 09:44 PM   #5
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Thanks all for the replies!

If something like this 186B24 Hammond Manufacturing | Mouser is suitable then 3 transformers isn't a cost issue. 6VA should be plenty for these applications right?


Quote:
Originally Posted by fabrice63 View Post
for the same money you'll find betters regs ;-)

.
Can you pointer towards some other reg kits?
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Old 21st April 2016, 10:02 AM   #6
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How about this version? LV-Regulator

Am really looking for complete kits for now
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Old 21st April 2016, 12:54 PM   #7
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diyinhk have plenty off good kit regs , searching here , on the site , you'll find many others options ;-)

in audio i personnaly use only R tore Transformers .

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Old 21st April 2016, 05:16 PM   #8
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Many thanks fabrice

The power supplies for the preamp will be in a seperate chassis so the basic transformers should be okay. Any thoughts?


I've been Reading up on r-core transformers. Where do you get them?
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Old 22nd April 2016, 10:24 AM   #9
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They have good products at fair prices

R-CORE pour châssis - Transformateurs - Composants électriques - Sommaire
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