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Re: Test Alternator Output
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Posted by Bob M on August 08, 2006 at 10:30:25 from (151.190.254.108):
In Reply to: Re: Test Alternator Output posted by Bob on August 08, 2006 at 09:06:21:
Right on! I have an ancient Simpson VOM (analog meter) I use for tractor electric work. The harmonics and "hash" in the old generator systems drives cheap DVM's crazy and renders 'em useless. Re smoking the alternator, been there done that! Years ago I was messing with my folk's car after dark. Thought I'd "test" the alternator by pulling pulling the battery ground cable off with the engine running and the lights on. I was rewarded by a brilliant flash of light as every lamp that was lit burned out and the motor quit. It also smoked the car radio, burned out all the dash gages and ruined the alternator. About the only thing that survived was the battery. I learned a VERY expensive lesson that day...
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Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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