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Re: Repost RE: Explain 3 Phase
Original poster: "davep by way of Terry Fritz <twftesla-at-uswest-dot-net>" <davep-at-quik-dot-com>
Tesla list wrote:
> Original poster: "Alex Crow by way of Terry Fritz <twftesla-at-uswest-dot-net>"
> Nope, with the batteries back-to-back the ends would be "in-phase", ie the
> same voltage at each end of the stack, and no voltage between them. When they
> are in true series, one end is at +ve Vbatt, the other at -ve Vbatt, ie out
> of phase, and you see the total voltage across the two ends. Now make these
> batteries two 'magic' AC batteries and you will see what I mean... This
> really hasn't got much to do with connecting things in series though, it's to
> do with comparing two voltages/signals.
(There actually IS an AC battery. Weak. Certain chemical systems
cycle, slowly, producing an AC battery....)
The whole discussion (which i suspect we might drop) comes down
(as i noted) to semantics and what is meant by 'phase'. If
If one had a floating input, phase sensitive voltmeter, one would
find the voltages as below, in phase:
(I switched to the usual wire code, to save ascii graphics...)
Vw-b in phase with Vr-w
They MUST be, to get 240 from Black to Red....