Re: Hey Bob Melville?

Posted by Bob M on February 26, 2004 at 19:15:59 from (66.67.9.170):

In Reply to: Hey Bob Melville? posted by DHuth2 on February 25, 2004 at 20:22:54:

Doug explained it pretty well below. Voltage is sensed voltage internally off the BAT terminal. Also the internal regulator uses the small voltage generated by residual magnetism in the rotor at startup to "turn on" the regulator, rather than turning it on by a separate signal from the ign switch. This is why single wire alternators have gotta be spun up pretty fast at startup before they'll begin charging.

Single wire alternators are found a lot in marine applications - probably also in other stuff like your forklift. And hot rodders seem to like 'em because they're simple to wire up. You can convert a regular 3 wire alternator to a single wire by swapping in a special single wire regulator.

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