On May 13, 2007, at 7:13 PM, WizLayer wrote:

On Sunday 13 May 2007 07:17:14 pm Aftab Jahan Subedar wrote:
Would it recharge the battery fully after discharge? I dont think so.
So you got to  recharge the external battery EXTERNALLY after power

What's wrong with that? Trickle-charge the battery and ride the computers from the battery at the same time... That's an uninterrupted power supply. A voltage regulator, converter, and a few filters will give you a clean, constant supply. It will last longer, and it's a lot cheaper in comparison.

Actually, this is a project of mine that's been on the back burner for years now. I'd like to add a network interface for remote controls, some health checking, and test modes, but would have to incorporate an embedded processor
(serial port and/or USB interfaces are just as possible).

Being that I've never messed with such, any suggestions as far as a good processor to start with? It doesn't necessarily have to be a processor that will do the whole kit-n-kaboodle. Right now, I'm just looking for something
I can learn the basics with.

I know it's not a BSD-related question, but I figured I'd ask anyway.



This is another approach that seems like it would be practical:
Use deep cycle car batteries, trickle charge with solar panels.
If a desktop computer can run on square wave generated by
dc/ac converter, use that as a power backup system, It would
have to have some kind of switching system to detect main
power drop and switch to the backup system.
Perhaps someone would be willing to, with engineering expertise
put together servers that would work on laptop batteries, like a
laptop. I do have one machine that has Yellow Dog linux (Mac
Powerbook 3400c) that runs 24/7 as my backup DNS server.

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