Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!att!mtuxo!lzfme!jwi
From: jwi@lzfme.att.com (J.WINER)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Power Supply Calculation:
Summary: Use an AC ampmeter
Message-ID: <1419@lzfme.att.com>
Date: 19 Jun 89 18:01:55 GMT
References: <6566@cs.Buffalo.EDU> <29060@cornell.UUCP> <4917@uoregon.uoregon.edu>
Organization: AT&T, Lincroft NJ
Lines: 24

Anant Kartik Mithal writes:

> Jim, you are correct. A 220 W powersupply can *deliver* 220 W if so
> required. It would generally deliver a lot less, unless you have a
> computer that has lots of options added to it.
> 
> The *only* way to figure out what your computer is using up is to 
> connect it in series with an ampmeter (which I would do, but don't
> have one handy...), and multiply the current with the input voltage:
> e.g. 0.5A (shown by the ampmeter) * 110 V for the line voltage.

No, no, no use an AC amp meter which works by induction. It has
(more or less) circular jaws which close around the power cord to
take the measurement. Attempting to hook a multimeter ac amp range
in series with the power line is likely to get you hurt.

Jim Winer ..!lzfme!jwi 

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