On Fri, 27 Jun 2008 20:12:18 +0200 (CEST), "Carlos E. R." wrote:

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The Friday 2008-06-27 at 09:01 -0400, Brian K. White wrote:

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From: "Carlos E. R."

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The Thursday 2008-06-26 at 23:10 -0600, Tom Patton wrote:

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On Thu, 2008-06-26 at 20:25 -0400, James Knott wrote:

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Ever consider getting a UPS?

Actually, one more solar panel and I will have a separate 48v battery stack to serve as the storage cells for a UPS on this computer. It will then take over automatically when the genny is stopped. I have tried three UPS brands, but none "liked" the inverter output. More accurately, the inverter did not like driving the high surge current of the UPS, in essence an inverter driving another inverter...

If you have frequent need for ups, or running the computer from batteries, a better solution is to drive the PC power supply directly from batteries instead of mains supplied by an inverter. There is one stage less, and you conserve battery power.

I beleive that is exactly what he just said he is in the process of doing.

No, not exactly. He said he would suply the UPS from the 48 volt stack. That means:

UPS PSU ______________________ _______ / \ / \ 48V DC --> 120 or 230 AC --> --> +12V -12V +5V -5V 3?

What I propose is:

PSU ____ / \ 48V DC --> +12V -12V +5V -5V 3?

There is no DC-->AC stage, and no AC-->DC stage.

Another alternative is an internal PSU/UPS unit:

PSU ____ / \ 48V DC --> +12V \ -12V 230V AC --> +5V -5V 3?

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What about something like this: http://www.powerstream.com/mini-itx.htm -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org