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Tool Talk Discussion Forum

Re: 48v delco alternator?

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Author  [Modern View]

06-07-2013 10:36:58

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You can connect a 36 volt zener in series with the sense terminal of the alternator.This is not the best way but it can be used to check the alternator's ability at 48 volts..

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George Marsh

06-07-2013 13:03:26

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 Re: 48v delco alternator? in reply to mmidlammmidlammmidlam, 06-07-2013 10:36:58  
I know how zeners work, but not completely following your logic of using a 36v zener. How is that going to be better than using a voltage divider? I'm leaning toward adding a variable resistor or pot to fine tune with.

I'm not 100% certain this pipe dream, which isn't mine, will work without frying the exciter/armature/rotor/voltage reg, or the entire alternator.

Also been thinking of applying full 12v to alternator and controlling it with the RPM's of engine.

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06-07-2013 20:10:11

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 Re: 48v delco alternator? in reply to George Marsh, 06-07-2013 13:03:26  
Quoting Removed, click Modern View to seeThe problem with simply sticking a "36v zener" in series with the sense lead is that it will be 36v at a specific zener current & I will guarantee you that such zener current is not the less than 1 milliamp sense line current. So, to use such a zener, you now need additional resistors to establish the proper zener current & to what advantage?

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