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Re: amp meter

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Bob (Aust)

09-16-2013 01:56:12

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[quote:a5bd1874a6]I'm sorry but I don't believe that is the case with a generator on a 6 volt pos ground system, from what I gather the generator needs the batt to know how much to charge.[/quote:a5bd1874a6]

You are not correct. A generator is a simple DC motor. Lift one battery lead and the engine should keep running if the generator is charging. You can also reverse the generator polarity without harming the generator. Indeed, you can flash over the regulator and change your electrical system from positive ground, to negative ground, if you wish.

[quote:a5bd1874a6]the alternator works different many it alternates current so yes with a alternator u can do that but not with a generator...[/quote:a5bd1874a6]

Yes you can lift a lead with an alternator, you can also reverse an alternator polarity so long as it is your alternator, not mine. Both are usually the last thing before you throw the alternator away and buy a new one!

An alternator needs the battery to excite the field. Reversing polarity risks burning out the two to four diodes in the back plate of the alternator.

Alternators are almost always strictly negative to ground.
This post was edited by Bob (Aust) at 03:11:31 09/16/13 5 times.

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09-16-2013 20:02:50

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 Re: amp meter in reply to Bob (Aust), 09-16-2013 01:56:12  
can a generator produce some DC current but not enough to keep the engine running or does it create a certain amount all the time, meaning it only works or it doesn't. when I put the neg lead off the batt the engine dies out and will shout off I guess this means I need a rebuild jenny?

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09-16-2013 08:26:10

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 Re: amp meter in reply to Bob (Aust), 09-16-2013 01:56:12  
well thanks I guess I have it all wrong, and sorry if I offended you in any way, so what your saying is at fast idle I should be able to put a lead and the tractor still run and if not then the generator is not charging enough or at all

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