Powering PC from 24V battery

Don wrote: : My AC input to the computer converts to 19VDC, 7.9A, 150 Watts Max. : What are my options to power this from a 24V (2/12V series : batteries). I have Googled and found some dc/dc converters @ 150W, : but no prices! Volume discounts, like I only need one. Should I go : for an inverter and use my current 120 VAC power supply? I'm a : certified novice, but it seems silly to convert 12-24V DC to AC and : then Back again to DC, or am I all wet? Some advice will certainly be : appreciated. : Thanks; Don

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Take a look at this site:

If you are in Australia, Dick Smith Electronics has them in their catalogue

Cheers,

Larry Australia

Generally the DC voltages inside of a PC are +12v, -12v, +5v, -5v. They're pretty achievable with off the shelf regulators. Only downside would be some of the amperages a PC draws, mostly going in the direction of the hard disk. Some of them are quite power hungry on startup. Actually, some of these sub processors, graphics and alike, are quite hungry too.

+19v????? It's not a laptop you're talking about by any chance is it? The 150w figure will be an absolute maximum. The Dell 5000e here only draws about 40w, even less with the lid down.

It's surprising just how little a PC will draw, this desktop is about 120w with a 19" LCD and no fancy cards in it, no cards at all actually.