Re: [IDEA] Poor man's UPS

From: Matthias Schniedermeyer
Date: Mon May 22 2006 - 12:14:52 EST

Christian Trefzer wrote:
On Mon, May 22, 2006 at 04:40:58PM +0100, Alan Cox wrote:

Lead acid batteries should be kept well charged to avoid sulphation and
always full charged when recharging, preferably using a charger that
will do proper three step charging. "Cycling" a lead acid battery is a
great way to destroy it.

So it is better to use only one battery (or an array thereof) which is
sort of charged and discharged at the same time, or is this idea just as
screwed..? I don't have a degree in electronics, mind you : )

Might be easier to build something that keeps a battery well maintained
and switches in case of power outage. With large enough condensors to
bridge the gap, which would also iron out any peaks and stuff, this
should work pretty well.

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.

Bis denn

Real Programmers consider "what you see is what you get" to be just as
bad a concept in Text Editors as it is in women. No, the Real Programmer
wants a "you asked for it, you got it" text editor -- complicated,
cryptic, powerful, unforgiving, dangerous.

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