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Are there any electronics engineers here willing to help? Please PM me!

I am working on a board to install inside stock voltage regulators to convert them to full solid state and have come up with a design by reverse-engineering another solid state regulator.

Right now it is switchable between 6v and 12v but it is negative ground only. What I need is for the schematic to be checked for viability and to come up with a similar one that is positive ground as I doubt making it also switchable is possible.

Also, perhaps not quite high enough in amperage as it’s rated at 40A but should closer to 45A but am having trouble getting it small enough even as it is due to the heatsinks needed.

For now, I want to focus only on postwar units.

Here is what they say about the Model A solid state units currently for sale:

Looks and fits just like the original. Not just a diode. No alterations required. The solution to your cut out and battery problems.

Working like a true voltage regulator, this does away with overcharged batteries, and burned out generators. Modern internals with original appearance.

Has FORD script. Usage on a negative ground system will destroy this unit.

I would use those internals under a dummy regulator cover.

However, I knew Packards that ran for years on cutouts only. The only problem was owner complaining that driving at night was in discharge zone because daytime setting was such to prevent overcharging. If they weren't driving for hours that wasn't a problem, otherwise the unit would need to be set for nighttime driving via the third brush.

Yes, I know about just about every solid state regulator that is currently available including the small ones used for motorcycles. Some are even positive ground but none have the needed amperage.

Oddly, though, when I started this thread and posted the entry, it made me think of a way to save space inside the housing so I’ll have to check it out.

In the meantime, if people with various years and models (especially postwar) can tell me the sizes of the cover and the regulator brand and model, it would be most helpful.

I'll see if I can some measurements for you of mine.

Thank you! I have a new ‘51-‘54 Delco-Remy type already but if yours is Autolite, it would be very helpful.

Just wondering if anyone has any experience with the Delco-style regulators from Quality Power

Quality Power Voltage Regulators

I have one in my 1965 Cadillac Fleetwood Sixty Special but regulators for alternators are an entirely different thing than regulators for generators.

The site says they have available:

"Generator regulator - for use with Delco generators. Take your choice of either the 6V or 12V options below. These are all 3 terminal - case grounded and will work with either Positive or Negative ground systems."

I had forgotten that I have one of those on order but haven't seen it yet. Still, my question is in looking for an electronic engineer willing to help with the design I'm working on.

Hi Don, I'm a mechanical engineer so I can at least try and help. My EE classes were a long time ago, so I'm not sure how prepared I will be. Send me a PM.