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SimonP
13-06-05, 10:27 PM
I'm after a PC-AT power supply that works from a 12-Volt input.

Yes, I could use an inverter with a standard PC power supply, but that's not exactly elegant or efficient in terms of power or space.

There is such a thing on the market, world-wide, called the ACE-865V.
It's only 65W output, but that's more than adequate for a Pentium-1 system.

Google shows two UK companies that sell them (Wordsworth and ICP) - but they are actually the same company. Well, the same person answered the phone anyway!
The price, 44.

But, they won't sell me one because I'm not an industrial customer.

Any suggestions, anyone?

Am I right in thinking that if I order from within the EU, I won't get hit for import duty or VAT?

Simon.

Robin427
13-06-05, 10:56 PM
I'm assuming this is for some sort of in-car computer...
... could you not measure what comes out of the back of the standard PC power supply and make your own? I'm assuming it's a low DC voltage so should be easy to convert for a man of your calibre...

oglyoodoo
14-06-05, 03:35 PM
Simon

I tried to send you a PM regarding your 12V PSU and after typing it all up and trying to send it all I got was:-

"SimonP has exceeded their stored private messages quota and can not accept further messages until they clear some space."

Regards

Denis

salmon
14-06-05, 03:41 PM
Hi Simon,

How about:

http://www.opussolutions.com/

Specifically designed for in -car solutions, not uk but needs must I suppose.

Regards
Chris

salmon
14-06-05, 03:46 PM
Hi Simon,

UK Company for similar products

http://www.watt-power.co.uk/page7.html

Regards
Chris

steamyrotter
15-06-05, 04:47 PM
I'm assuming this is for some sort of in-car computer...
... could you not measure what comes out of the back of the standard PC power supply and make your own? I'm assuming it's a low DC voltage so should be easy to convert for a man of your calibre...

Not that easy as there is +12v -12v +5v -5V and occaisionally +3.3v
Also these are usually high current rating as well.

Can be done but the cost of the components can get a bit high so easier to buy it.

Best to say you are a PC specialist in the industrial sector then they'll send it.

They are not going to check...
(Possibly.
Maybe,
Er!)

.

Bowtie
15-06-05, 06:31 PM
I don't know what kind of CPU-power you need but Mini-ITX boards has a small form factor and there are native 12V power supplies to be used in vehicles...

Take a look at the following pages (imagination is your only limit):

http://www.mini-itx.com/
http://www.mini-itx.com/store/?c=10

http://linitx.com/index.php
http://linitx.com/index.php?cPath=24

Bowtie
15-06-05, 06:41 PM
And make sure you don't miss the following category: http://linitx.com/index.php?cPath=88

SimonP
16-06-05, 12:57 AM
Denis,
I have cleared my PM inbox.

Robin,
I am using a home-made switch-mode power supply at the moment. It works reasonably well - the +5V holds up to about 3V when starting the engine (enough for the CPU and LCD not to bother about it!), but the +12V dips below the 10.5V needed for the HDD and CD-Rom. No great hardship as I just have to wait a few seconds for the HDD or CD-Rom to spin back up again.

The ACE-865V is rated down to 8V input.

Bowtie, Salmon
Thanks for the links. I've had a brief look at them and will have a better look Friday when I have broadband access (I'm on 14.4kbps at the moment).
I'll have a think about going the ITX/VIA C3 route - I was hoping to stay with older "AT" hardware and its simpler power requirements as I don't need much over 90MHz CPU.

Thanks for all your help,

Simon.

Bowtie
16-06-05, 03:52 PM
SimonP, note that http://linitx.com not only sell ITX-PSUs for car usage, they also sell 12V AT/X PSUs (don't remember if they got AT and ATX or only one of them)... Check my previous link...