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Re: Re: Re: Re: 6V or 12V?
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Posted by Salmoneye on November 11, 2000 at 19:29:53 from (206.27.102.120):
In Reply to: Re: Re: Re: 6V or 12V? posted by ROBERT on November 11, 2000 at 14:49:46:
Not all generator systems are positive ground.
If the H has the same type of shunt wound genny's as the Fords, it is possible (and easy) to make them negative. These generators will produce either plus or minus polarity depending on the residual magnetic field. All you need to do is repolarize the generator. The purpose of polarizing the generator is to apply voltage to the soft iron field shoes to inpart a residual magnetic field of the correct polarization. If you switch battery polarity it will be imperative to change the polarity of the field poles. These generators are "Shunt" Generators and the correct way to polarize the shoes is to take a jumper wire and attach one end on the "Bat" terminal of the voltage regulator and momentarily touch the other end of the jumper to the "Arm" or sometimes called the "Gen" terminal of the voltage regulator. You should see a spark when you remove the jumper. Do not under any circumstances touch the other end of the jumper to the "Field" terminal as you can cause damage to the voltage regulator. (The high side of the field winding is connected internally to the armature terminal and is not accessible by any other means. For this reason, the access to the high side of the field is accomplished by energizing the arm or gen terminal of the generator.) I copied this from an old post on the N Board by Claus. I have no idea why, or how, just that it does work...
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