Power Sources - Sharing a single power supply

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Sharing a single power supply

Printed From: Graham Slee Hifi System Components
Category: And the rest
Forum Name: Power Sources
Forum Description: Where the power comes from has always been a hot topic - even more so now with new World legislation
URL: https://www.hifisystemcomponents.com/forum/forum_posts.asp?TID=5488
Printed Date: 27 Mar 2026 at 5:57am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: Sharing a single power supply

Posted By: Ash
Subject: Sharing a single power supply
Date Posted: 28 Jun 2022 at 4:35pm

Quick question. Might be a stupid one but here goes.

If I have a 12V max 10A power supply from the wall and I have two computers that both require 12V input and the sum of their respective maximum current draws would be less than 10A, can I connect them in parallel to the same supply?

Replies:

Posted By: Fatmangolf
Date Posted: 28 Jun 2022 at 5:50pm

Probably fine but I'd err on the side of caution, allow for peak current draw. If their combined draw is under 5 amps it should work well.

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Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.

Posted By: BAK
Date Posted: 28 Jun 2022 at 8:19pm

The 2 computers sharing a common power supply may be sharing each others' noise. The only way of knowing is if:

1 computer works fine on the power supply by itself with no abnormal data faults;

and then 1 or both have data faults when both are connected to the same power supply.

If both operate normally when both are connected, then you're OK.

Each may have power input noise filters built in... as in local decoupling plus a noise rejection coil.

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Bruce
AT-14SA, Pickering XV-15, Hana EL, Technics SL-1600MK2, Lautus, Majestic DAC, Technics SH-8055 spectrum analyzer, Eminence Beta8A custom cabs; Proprius & Reflex M or C, Enjoy Life your way!