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John T
11-24-1999 19:38:20
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Re: Electrica question for John T in reply to Dennis, 11-24-1999 17:40:04
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Dennis, LONG ANSWER FIRST Think of a generator not as an electron pump pumping out electrons (thats current flow) but as an electro mechanical energy converter in which you input mechanical energy (rotational force on the pulley), and it puts out electrical energy. Now, electrical energy is volts times amps, so if you put the same mechanical energy in, you get the same electrical energy out. Therefore, if you put out twice the voltage, the current could only be half as much to still be putting out the same energy if you dont change the input energy. But, thats not the answer to your question. The thing is if you convert to 12 volts the generator can still likely put out almost as much current as before, because it may accept more mechanical energy (may be a little more drag load off the engine) from the engine to turn it, plus the regulator, besides just regulating voltage, is also a current regulating device which will allow maybe up to 7 to 10 amps or so to still flow. Theres no free lunch in energy and you cant create or destroy it, but when you change the regulator its possible the generator pulley is harder to turn yet the new current regulator still wants to allow more amps. SHORT ANSWER, if the old generator put out 10 amps at 6 volts, after converting, it can put out 12 volts at maybe only a few less amps depending on the new regulators current limits. I cant exactly answer the question not knowing all that stuff. Remember, a generator doesnt know its voltage, its determined by field current and pulley speed plus armature segments, thats why the conversions work, but why a real shop would likely change field coils also but Ive never done that yet had none go bad. Good Question. Put it on and let us know. Ol John T
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