Re: Re: When did alternators show up ???

Posted by Jon Hagen Road trip done,Here is the rest of the story on December 23, 2001 at 19:59:14 from (63.160.194.193):

In Reply to: Re: When did alternators show up ??? posted by Jon Hagen on December 23, 2001 at 09:02:40:

Generators could not be replaced by alternators untill high amperage diodes small enough to fit inside the alternator case were developed(about 59 or 60).Untill then the only way to convert a generator's normal AC output to DC for charging batteries was to use the spinning commutator and brushes of a generator. I once owned what I call the missing link between generators and modern alternators. I had a 58 Ford truck that was equipped with a rotating field,3 PH generator that instead of having internal diodes to convert AC to DC, had a large plate type rectifier mounted in front of the radiator for air cooling. It had 3 wires carrying AC from the generator to the rectifier,and 1 heavy DC wire from the rectifier to the battery. aparently button diodes were not avalible yet so this 2 piece rig with external rectifier was necessary.

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