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Off-The-Shelf Linear PS for Pi?
Off-The-Shelf Linear PS for Pi?
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Old 1st February 2018, 08:07 PM   #1
BillTheCat is offline BillTheCat
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Default Off-The-Shelf Linear PS for Pi?

Howdy, folks.

I'm looking for an off-the-shelf linear power supply that will convert 120VAC (IOW, a standard wall outlet) to 5V/3A DC (I think!) so that I can run a Raspberry Pi3 and also power my DAC separately. If there isn't one power supply that'll do it, or if for some technical reason I need two units, so be it.

Rumor has it that many believe that powering the Pi and DAC separately results in a real performance benefit, so I figured I'd give it a shot. Since I'm not an electronic whiz, I look for advice from those-in-the-know about these things.

Thanks in advance!
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Old 4th February 2018, 02:11 PM   #2
BillTheCat is offline BillTheCat
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Wow. I feel like I farted at a cocktail party. Over 100 views and nobody has a recommendation?
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Old 4th February 2018, 02:26 PM   #3
mkane77g is offline mkane77g  United States
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Off-The-Shelf Linear PS for Pi?
Traco Power AC/DC Power Supplies 5 Volt Power Supplies with Chassis | 5Vdc Enclosed Power Supplies in Stock | 10 - 1,500 Watts | TRC Electronics

PBA15F-5-N - Cosel - TRC Electronics

Last edited by mkane77g; 4th February 2018 at 02:29 PM.
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Old 4th February 2018, 02:27 PM   #4
AndrewT is offline AndrewT  Scotland
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I would expect that a Member who is already good with digital and switching would automatically want to use those skills and stay with a switching style of PSU.
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Old 4th February 2018, 02:51 PM   #5
BillTheCat is offline BillTheCat
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Are these linear power supplies?

Quote:
Originally Posted by AndrewT View Post
I would expect that a Member who is already good with digital and switching would automatically want to use those skills and stay with a switching style of PSU.
Sorry to say, I'm not even sure what this means. Seems there's some thinly veiled innuendo, but I'd be grateful if you can lead me to it. Perhaps you could just say what's really on your mind?
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Old 4th February 2018, 04:04 PM   #6
SanjeevM is offline SanjeevM
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I have tried the Allo adapter, the IF I adapter, and a 10000mAh Battery bank from MI.

The best sound is when I use the third one !!

It seems that no amount of filtering and cleaning AC can work better than a pure DC source.

On a practical side, charging a battery bank may be a pain, but the pleasure that you get from the pristine pure sound and clear notes deep bass makes it pale in comparison.
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Old 4th February 2018, 04:07 PM   #7
mkane77g is offline mkane77g  United States
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Off-The-Shelf Linear PS for Pi?
[QUOTE=BillTheCat;5330575]Are these linear power supplies?


No clue. There help desk is full of information.
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Old 4th February 2018, 04:17 PM   #8
BillTheCat is offline BillTheCat
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[QUOTE=mkane77g;5330627]
Quote:
Originally Posted by BillTheCat View Post
Are these linear power supplies?


No clue. There help desk is full of information.
So, you made a suggestion without taking any time at all to comprehend the question, or knowing what you're talking about. Thanks.
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Old 4th February 2018, 04:29 PM   #9
scottjoplin is offline scottjoplin  Wales
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A linear power supply comprises a transformer, a rectifier, and smoothing capacitors, it may also include a regulator. The power supplies in that link are switch mode power supplies. Do you specifically require a linear power supply?
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Old 4th February 2018, 04:38 PM   #10
BillTheCat is offline BillTheCat
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Quote:
Originally Posted by scottjoplin View Post
A linear power supply comprises a transformer, a rectifier, and smoothing capacitors, it may also include a regulator. The power supplies in that link are switch mode power supplies. Do you specifically require a linear power supply?
Yes, that was my point in my reply above.

I know how to power the Pi and DAC separately, but a linear power supply is claimed to provide enhanced performance by reducing or eliminating line noise.

Since I don't have the skill or time to dabble with a DIY solution, I was looking for something off the shelf.

Thanks!
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