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JRKO 20th April 2016 07:22 AM

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

AndrewT 20th April 2016 10:24 AM

B) is OK and will be the cheapest way to arrive at three different voltages from the one transformer secondary.

Pafi 20th April 2016 12:02 PM

I would choose C, because this way you can avoid internal ground loop problems easily.

fabrice63 20th April 2016 05:12 PM

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 ;-)


JRKO 20th April 2016 08:44 PM

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?


Originally Posted by fabrice63 (
for the same money you'll find betters regs ;-)


Can you pointer towards some other reg kits?

JRKO 21st April 2016 09:02 AM

How about this version? LV-Regulator

Am really looking for complete kits for now

fabrice63 21st April 2016 11:54 AM

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 .


JRKO 21st April 2016 04:16 PM

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?

fabrice63 22nd April 2016 09:24 AM

They have good products at fair prices

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

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