Re: Solid state voltage regulator for a generator

Posted by Gerald J. on December 30, 2004 at 19:28:15 from (67.0.108.65):

In Reply to: Solid state voltage regulator for a generator posted by markloff on December 30, 2004 at 19:06:16:

I built one back about 1968 or '69 for a 12 volt generator in a VW Beetle engine that I put in a 6 volt bug. Couldn't change the generators easily because they were different sizes and not mounted on a swing system but cradled in a casting.

I used a big diode for the cutout. My regulator seemed to get me doubled battery life compared to the original VW regulator. I probably could have used the original VW regulator but my circuit worked much better. Today I'd do it differently with power MOSFETs and ICs that didn't exist then.

Its practical to take the voltage sample for the regulator from the battery so the diode drop in the cutout isn't a problem and the current at the voltage sample can be too small to discharge the battery in under several months, or smaller than the self discharge.

Gerald J.

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