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- Xref: sparky rec.boats:8848 sci.physics:22004
- Path: sparky!uunet!cs.utexas.edu!uwm.edu!linac!att!news.cs.indiana.edu!arizona.edu!evax2.engr.arizona.edu!FRANK
- Newsgroups: rec.boats,sci.physics
- Subject: Re: inverter electric lesson
- Message-ID: <1993Jan1.152055.4192@arizona.edu>
- From: frank@evax2.engr.arizona.edu (Frank Manning)
- Date: 1 Jan 93 15:20:54 MST
- Reply-To: frank@evax2.engr.arizona.edu
- References: <mshulman.20.725843864@genghis.borland.com>,<1i06daINNjvq@calvin.NYU.EDU>
- Distribution: world,local
- Organization: University of Arizona, College of Engineering and Mines, Tucson
- Nntp-Posting-Host: evax2.engr.arizona.edu
- Lines: 26
-
- >In article <1i06daINNjvq@calvin.NYU.EDU> roy@mchip00.med.nyu.edu (Roy Smith)
- >writes:
- >
- >mshulman@genghis.borland.com (Michael Shulman) writes:
- >
- >>So, the 600W microwave takes about 60A per hour of operation at 12V,
- >>depending on the efficiency of the inverter.
- >
- > 2) It is totally meaningless to say something takes "60A per hour".
- >Amps is a unit of current. I havn't the foggiest idea what "amps per hour"
- >is a unit of.
-
- It depends on who's doing the talking. If the source was LBJ and if you were
- the Air Force officer in charge of the new microwave system, and keeping in
- mind the previous confusion over the SR-71, you would scramble and say to the
- reporter:
-
- "Yes, the President was referring to the inductance of the system during
- startup. As you know, inductance is -L*di/dt. For no particular reason, units
- of amps per hour happen to have been adopted for the current-change term."
-
- If the statement had come from our esteemed Vice President, of course, it would
- be plastered on the front page of the New York Times, along with unending
- razzes from the pundits.
-
- -- Frank Manning
-