Nice DC power supply unit?

[Lawrence001]

I was looking for a PSU for my vdac (eg..ifi)and came across this.

http://www.powerinspired.com/12vdc-power-supply-with-backup-p-1922.html?gclid=Cj0KEQiA2uDEBRDxurOO77Cp-7kBEiQAOUgKVzL_rd8x1myIwnk7alwxJYVCPtKBRa4VLpTuZW4 qlfgaAhgC8P8HAQ


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[Stryder5]

Thanks for this, will be getting one for my router, great idea.

[Lawrence001]

I'm hoping the battery will smooth out any variations in the power supply and be a big improvement on a standard wall wart.

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[Arkless Electronics]

It's a UPS....

[Lawrence001]

It's a UPS....
Can that have beneficial impact on the supply"quality" though?

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[Stryder5]

Can that have beneficial impact on the supply"quality" though?

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If I understand it the UPS will supply 12 volts transformed from 240 volts directly, the battery is only operational when 240 volt fails, so is not in circuit during normal operation.

Could be wrong though :)

[Lawrence001]

I wasn't sure still might be better regulated than the wall.wart and its worth a punt at that price.

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[Arkless Electronics]

If I understand it the UPS will supply 12 volts transformed from 240 volts directly, the battery is only operational when 240 volt fails, so is not in circuit during normal operation.

Could be wrong though :)

That's the usual case yes.

Beyond that I'll stay out of this as it's an area where nearly everything believed by the average non engineer is completely wrong....

[nthall]

I don't know a simple way to explain it either. It has circuitry in it that would make it a bad choice as power supply for audio equipment. It would probably introduce line noise into all of your other gear too.

Even if you unplugged it and just used it like a rechargable battery (not what it's really designed for) you might get an album's worth of dirty power for your DAC if you're lucky.







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[Light Dependant Resistor]

I don't know a simple way to explain it either. It has circuitry in it that would make it a bad choice as power supply for audio equipment. It would probably introduce line noise into all of your other gear too.

Even if you unplugged it and just used it like a rechargable battery (not what it's really designed for) you might get an album's worth of dirty power for your DAC if you're lucky.







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A look at the video of the merits and design shows it is when DC powered unplugged or turned off increasing its internal battery of 3.7v
to 12v, hence it has circuitry lets say increasing by x4 then regulating down to 12v when disconnected from the mains.

Unless tried as a power supply for audio, it would be hard to say it is strictly a bad choice vs some other more widely known design.
Suggest an AOS member gives one a go, rather than write it off so quickly. To me it looks like a clever niche market product
particularly for rural areas where power delivery may be a bit fluffy, and equipment like routers are needed to stay on.

But who knows, it might be reasonable for audio purpose when unplugged.

Cheers / Chris

[Arkless Electronics]

I don't know a simple way to explain it either. It has circuitry in it that would make it a bad choice as power supply for audio equipment. It would probably introduce line noise into all of your other gear too.

Even if you unplugged it and just used it like a rechargable battery (not what it's really designed for) you might get an album's worth of dirty power for your DAC if you're lucky.







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It wasn't so much a matter of explaining it as my not wanting to get involved in subjective matters these days... In these "post truth" times no one wants the opinions of experts apparently so my present policy is "let them get on with it"...

[nthall]

It wasn't so much a matter of explaining it as my not wanting to get involved in subjective matters these days... In these "post truth" times no one wants the opinions of experts apparently so my present policy is "let them get on with it"...
Getting on with it taught me a lot. Turning on the radio in my truck while I was charging the dead battery led to some research.

I'm far from an expert, but I have a degree in Mechanical Engineering, and I've always been interested in electronics. Doing the wrong thing always sent me to the books, not the store. Working as an engineer sent me into banking.

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[Stryder5]

Getting on with it taught me a lot. Turning on the radio in my truck while I was charging the dead battery led to some research.

I'm far from an expert, but I have a degree in Mechanical Engineering, and I've always been interested in electronics. Doing the wrong thing always sent me to the books, not the store. Working as an engineer sent me into banking.

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I can't resist any less longer Nathan, have you cut off the bottom of the photo, the bit with the numbers on:)........sorry

[RothwellAudio]

In these "post truth" times no one wants the opinions of experts apparently...
I think Michael Gove's comment has been taken out of context. Of course experts should be listened to - it's the people who claim to be experts that we should be wary of. Economics isn't a science anyway and whatever an economist claims it isn't difficult to find another economist with contrary claims.

Electronic engineering is a lot more reliable and predictable than economics.

[nthall]

No. I just suck at selfies. I can't smile and use a camera at the same time for some reason. There are a few mugshots on record though.

No offense taken.

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[Arkless Electronics]

Getting on with it taught me a lot. Turning on the radio in my truck while I was charging the dead battery led to some research.

I'm far from an expert, but I have a degree in Mechanical Engineering, and I've always been interested in electronics. Doing the wrong thing always sent me to the books, not the store. Working as an engineer sent me into banking.

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Vastly better paid anyway!

[Stryder5]

No. I just suck at selfies. I can't smile and use a camera at the same time for some reason. There are a few mugshots on record though.

No offense taken.

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:) cool.

[Arkless Electronics]

I think Michael Gove's comment has been taken out of context. Of course experts should be listened to - it's the people who claim to be experts that we should be wary of. Economics isn't a science anyway and whatever an economist claims it isn't difficult to find another economist with contrary claims.

Electronic engineering is a lot more reliable and predictable than economics.

Not according to audiophiles unfortunately! Whilst I'll no doubt make random exceptions I just can't be arsed with wasting my time explaining things to people when they'll usually just say that "Jim and Steve and Quentin on XYZ forum, non of whom know anything about electronics whatsoever, say differently so I'll go along with what they say".. Let them waste their money and fill 40 pages debating stuff that is 100% impossible... telling the truth and sticking to it apparently causes offence and upsets the smooth running of the site so basically I'm done on all that stuff... next time someone insists that putting a carrot on their CD player whilst polishing the mains fuse makes things sound better I'll laugh at them privately but remain out of the debate!

[nthall]

Economics is more of a game. The logic of engineering transfers to it pretty well.

I made the mistake of getting into one of those debates yesterday. It's music so there is no way to balance subjectivity with science. Any component, even wire affects the complete circuit. Whether or not it's better isn't universal. Audiophile terminology and pseudo-science doesn't explain why it is better.

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[pitadavespa]

I had an idea a few weeks ago. After a quick google search, I discovered I wasn't the first person that had it. :)

It powers my routers, tvbox, external disk, RPi and it event let's me charge my smarphones and all those things.
It allowed me to unplugged 5 permanently connected power supplies. :)

I just made something similar to this and, I have to say, although there are (much?) better power supplies, I'm pretty happy with it!
http://jumperone.com/2011/06/atx-power-supply-tutorial/
And it even runs pretty cool without the fan!
No costs involved and lots of amps available!

Please, don't kill me :D

[Lawrence001]

Old thread now but I've finally got the vdac and PSU united. Very obvious improvement in bass tightness and soundstage, also a bit clearer in the treble so I'm a happy camper.

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