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Re: MOT Testing
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- Subject: Re: MOT Testing
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Tue, 26 Apr 2005 18:50:52 -0600
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Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>
At 04:07 PM 4/26/2005, Tesla list wrote:
Original poster: Ed Phillips <evp@xxxxxxxxxxx>
"I hate phasor diagrams, they give me a headache!"
They're actually a very useful way of visualizing a circuit, if you
keep them simple. When I took EE in the 1940's we were supposed to use
them directly to solve problems (analytic geometry) and that was a mess
at best. Way too complicated, particularly when you were dealing with
something like a three-phase generator with unbalanced loads!
And, exceedingly useful for looking at various schemes for power combining
more than one source, since most combiners do some sort of vector
addition. For instance, combining 4 sources into one higher power source
you'd have 4 vectors, with randomly distributed phases over some small
angle (hopefully) being summed.
Also a nice way to look at things like mixer intermodulation products, and
such devices as quadrature couplers.
Finally, what would modern comm system analysts do without constellation