PSN-L Email List Message

Subject: Re: Generator recommendations
From: Jim Hannon jmhannon@........
Date: Tue, 08 May 2001 21:57:45 -0500

One thing that I keep hearing from lots of places it that you need a good 
sine wave to power a PC. This pushed one of my buttons and I sure would 
like to hear the reason for the damage. There is nothing that I know of 
about the off line switch mode power supplies used in PC that would require 
a good sine wave. The AC power goes to a bridge rectifier and then to a 
filter capacitor. A square wave may heat up the capacitor a little more 
than a sine wave but that is about all. However one problem that can happen 
with gas generators is that they have a tendency to go out of regulation 
and overvoltage just as they run out of fuel. This can damage a lot of 
things not just computer power supplies. Suggestion: don't let your 
generator run out of fuel.
Jim Hannon


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Larry Cochrane <cochrane@..............>