Posted by Janicholson on July 10, 2012 at 10:19:28 from (199.17.55.151):
In a "A" circuit system, the field is externally grounded by the VR or Charge control switch. It gets its power from attachment to the arm (hot) brush inside the gen, or from a third brush picking up electricity (a little remotely) from the commutator segments. Thus when the bat to gen (or arm) jumper is used the field gets current through their windings. This creates residual magnetism in the iron of the field poles. In a "B" circuit system, the field is grounded inside the generator directly to the case. The field terminal is provided with voltage from the regulation system (not grounded at all). Thus polarizing a B circuit requires flashing the Bat to the F terminal. Momentarily energizing the Field coils to make residual magnetism of the correct magnetic polarity.
Polarizing improperly can and will ruin regulator control components, or not do anything. Jim
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Talk of the Town: The Saga of Grandpa's Tractor - by The following saga is from the Tractor Talk Discussion Forum. Someone. The saga starts with the following message: Hey guys I have a decision to make. I know what you all will probably suggest and it will probably agree with me way down inside, but here it is. I have a picture blown up and framed in my "tractor room" of a Farmall M. It was my Grandpa's tractor, of which whom I never got to meet. He froze to death getting this tractor out of the barn to pull a truck out of the ditch before I was born. Anyway my dad and aunt had to sell it at the auction,
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.