In Reply to: Re: Generator not charging on 6 V 49 8N posted by raven on June 04, 2013 at 15:31:37:
You shouldn't find B-A-F and A-F-B confusing, since that is exactly the way the type A & type B VRs are built. What greater confusion would result if I were to draw them with terminals oriented differently than on the actual hardware??
Polarization is simply the magnetizing of the soft iron pole pieces to have N-S or S-N direction of the magnetic field from one to the other (through the armature). It is the direction of current flow around the pole piece that determines the direction of magnetic flux created. That can be altered by wire winding direction(fixed at time of manufacture) and by the direction of the current as determined by +/- connection of field to battery.
In your last two paragraphs, regarding parallel/series, well, .... I would say that it is difficult to have only 2 connected circuit elements (gen & batt) and have them be anything other than in series (what ever current going through one is going through the other). Excessive current resulting from a reversed batt/gen situation will be in armature, not field. In these generators, maximum field current is set by the voltage at the armature terminal, and when connected to a battery, the battery being the elephant in the room will set the armature voltage (wire/connection drops being negligible).
By the way, spin an N generator backwards (CCW facing pulley) and there will be NO significant output. (Hint: field windings will be opposing residual magnetization.)
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