Shaun Van Poecke wrote:
"sw" wrote in message
. ..
Do you think it's OK for a square wave inverter to feed a UPS that feeds a
PC? I would really like to do that but was told by some one at APC it's a
no
no. My feeling was he had no idea and was just covering himself.
Thanks

Di second whats already been said here - you'd be fine. I have a small
inverter that runs my notelbook, as well as a DC-DC converter for the same
purpose. I cant remember which one is more efficient, but the DC-DC one i
mainly use for flights and such because it can plug in on the plane. In the
car, the inverter wins because it doesnt cause any interference with my
stereo ;-)

Shaun



I think some UPS's use a step-down transformer to get down to the
battery voltage. A square wave inverter can wreak havoc with a
transformer expecting 60 Hz AC.

With a UPS, the PC is powered by 120 VAC that is generated from the
battery voltage by an inverter.

There is no problem powering a PC from an inverter, as Larry has made
abundantly clear. There is very likely a problem powering a UPS from a
square wave inverter.

A sine wave inverter, OTOH, should cause no problems at all.

Make sense?

Good luck.

Chuck

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