Actually, B type regs survive A-type polarizations just fine. It is A-type regs that smoke fast when you polarize
them as B. B's are damaged by applying battery voltage to Field, too...UNLESS one removes the VR Field to gen Field connection before applying Battery to generator. Must apply to gen Field only & NOT VR Field.
This caused me to look to determine "why".
Looking at circuits, caused me to ask, "why didn't 'everybody', from day one just use the A-type polarization
technique on BOTH A & B types"? It doesn't appear that it would stress anything in the B-type regulator any more
than normal operation and would in fact polarize the field? Yes, current would flow in Field AND Armature in both the "A" and the "B" types.
It would have also meant that user need not know whether he has A or B system, and not need to try to determine
which he has. Nor would there be any chance of damage by choosing the wrong polarization method, since there would
be no choice to be made...same method for all.
As I mentioned before, perhaps the designers thought folks would just follow old habits and jumper the two left
most VR terminals and sought to try to "help" them avoid that?? Most can't determine which ckt type they have,
either.
Another: Could this be a very early "vast right (or Left) wing conspiracy" to help users burn up more VRs and thus
sell more regulators by baiting users into mistaking which of two techniques to use? :)
I was the guy in class that aggravated the professor by always asking "WHY?".
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