A Class B has the other end of the Field windings internally grounded.....On a Class A the fields get their ground via the VR's field current control relay then to ground....... You regulate a Class B by regulating the voltage on the VR's FLD terminal,,On a Class A you regulate by regulating the ground on the FLD terminal. SEE MY POST ABOVE for more info...
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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