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Steve, you have 3 terminals- B, G, F B is connected to your battery bus and it is a reverse-current relay coil/contactor. It allows power from the generator output to go directly to power the battery bus and charge the battery. If the generator is below 12 volts, as it is during low rpms it keeps the battery bus voltage from back-flowing into the generator. G is connected directly to the output of your generator, and it goes several places- it goes directly through a big, fat winding that is current sensitive- if your generator ever starts putting out more current than it is rated for, this relay will open and limit the current. another place it routes some current is through the fine wire winding next to it, the voltage sensing coil, and then it routes some through the reverse current relay to head out to the bus, as described in B above. F is connected to your generator's field. When the voltage sensing coil senses a voltage above about 14.3 or so, it opens up the contactor and allows the generator field to lose it's power and the field collapses, weakening the field and lowering the voltage output. It flutters like this several times per second to regulate the voltage to a constant value. this is the basic function of the voltage regulator Jan Zanutto Fresno, CA ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
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