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Bill Schertz wrote:
From a logic standpoint, if you are generating current, you are doing work -- doing work requires the expenditure of energy. Therefore when you put a load on the alternator, it must draw power from the engine, and increase the fuel burn -- or decrease the amount of power available for other purposes.
If you want to test this, take a small electric motor (such as from a fan) that doesn't have lots of power. hook it up to drive the alternator with no field current, and then turn the field current on and watch the speed change.
Bill Schertz
KIS Cruiser #4045
N343BS
Another test.
Get you one of those little bicycle generators that drive a little headlight, and go for a short ride. The generator lays against the tire and is driven by it, which is driven by your legs. You'll see real quick that driving those electrons around takes real energy.
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http://www.ernest.isa-geek.org
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