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Old 19-04-2019, 04:27   #1
rom
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Join Date: Mar 2016
Boat: Lagoon 440
Posts: 736
Hitachi alternator still producing without field ?!
Hi, I have modified an hitachi LR180 alternator for external regulation. I can start the alternator with the external regulator (p-type) but I can not shut it down. The alt still produces when I unplug the field positive. The only way to shut it down is to unplug the field negative. I have removed the internal regulator and the other component that I believe is the diode trio. Any idea ?
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