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*To*: tesla-at-pupman-dot-com*Subject*: Repost RE: Explain 3 Phase*From*: "Tesla list" <tesla-at-pupman-dot-com>*Date*: Tue, 01 May 2001 11:31:10 -0600*Resent-Date*: Tue, 1 May 2001 11:41:54 -0600*Resent-From*: tesla-at-pupman-dot-com*Resent-Message-ID*: <zxoXB.A.q1E.PVv76-at-poodle>*Resent-Sender*: tesla-request-at-pupman-dot-com

Original poster: "Tuite, Tom by way of Terry Fritz <twftesla-at-uswest-dot-net>" <TTuite-at-ALLEGROMICRO-dot-com> Sorry, it looks like my cheasy graphics were made even worse somewhere along the line. Let me try and fix this. In my post below the two signals should appear as: |---| |---| |---| ---------------------- 0 | | | | | | ---| |---| |---| |--- 0 OR ---| |---| |---| |--- 0 | | | | | | |---| |---| |---| 0 ---------------------- > -----Original Message----- > From: Tesla list [mailto:tesla-at-pupman-dot-com] > Sent: Tuesday, May 01, 2001 9:10 AM > To: tesla-at-pupman-dot-com > Subject: RE: Explain 3 Phase > > > Original poster: "Tuite, Tom by way of Terry Fritz > <twftesla-at-uswest-dot-net>" <TTuite-at-ALLEGROMICRO-dot-com> > > BE WARNED!!!! VERY CHEASY GRAPHICS/EXPLANATIONS BELOW!!!! :) > > > Hmmmmm, mayhap we have a terminology conglict here. I would > call either of > the below 180 degrees out of phase (or inverted): > > > |---| |---| |---| > ---------------------- > 0 | | | | | | > ---| |---| |---| |--- 0 > > OR > ---| |---| |---| |--- > 0 | | | | | | > |---| |---| |---| 0 > > > > ---------------------- > > > > This comes from the following, for the sake of simplicity > lets look at the > right most signals above. Here we have one at a constant > positive value and > the other at a constant negative value. > Generally we would go to the imaginary plane to really look > at this stuff so > lets do that: > > > Imaginary axis > . > . > . > .................... Real axis > . > . > . > > Now if we plot the signals we get; > > > The top signal yields this: > > Imaginary axis > . > . > . > .............----------.... Real axis > . > . > . > > Where the magnitude is some purely real positive value. > > The botom signal yields this: > > Imaginary axis > . > . > . > ...---------........ Real axis > . > . > . > Where the magnitude is some purely real negative value. > > NOW, the angle between these two vectors is 180 degrees. So > we say they are > out of phase by 180 degrees. Hehe now I thik I have confused > myself, but > for better or worse thats what I think of when I hear 180 > degrees out of > phase, or am I completely crazy? :) > > Tom T.

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