Re: [IDEA] Poor man's UPS

From: Christian Trefzer
Date: Mon May 22 2006 - 15:40:19 EST

On Mon, May 22, 2006 at 06:15:24PM +0200, Matthias Schniedermeyer wrote:
> You just described the working-principle of a "line-interarctive" UPS.
> AFAICT this is the most used UPS-type, at least for every "small" UPSes
> i've seen in the last few years.

Exactly, and since I cannot afford to buy one I'd have to build it
myself using mainly car batteries. The most complex part would be to
charge the batteries in a way that won't kill them over time. Building
such stuff into the PSU after the secondary coil and AC/DC converter
would save the double-conversion loss, therefore making this ideal for a
single machine. But I'm still brainstorming, lacking both money and

Kind regards,

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