Date:         Sun, 17 Nov 2002 18:52:27 -0800
Reply-To:     pensioner <al_knoll@PACBELL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         pensioner <al_knoll@PACBELL.NET>
Subject:      Re: Laptop Power Consumption?
In-Reply-To:  <200211172252.gAHMq9fY282280@vmj-ext.prodigy.net>
Content-type: text/plain; charset=iso-8859-1

For these dual conversion phenomenon dunnah forget to take into account the
efficiency of the "modified sine wave" converter 12vDC-> 120vac.  Check the
waveform before deciding that cheaper is better.  The computer powersupply
may have some limitations regarding waveform.  It expects a pretty clean
sinewave.  Most inverters do a stepped approximation of a sine wave.  Check
before you plonk down those IBM dollars.

pensioner  (MSEE,MSCS, and still can't find a decent job)

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