Who would like to beta test one of my new voltage regulators?

Jim Kueneman said

Hey Matt, I would like to try one on the A100 I am building... it will be a month or two before I am to that point though.. If you want someone to bounce ideas off send me the schematics and we can discuss what the issues are you are seeing. Did you account for the huge L you see looking into the field winding in your control loop? (retired electrical engineer in power systems, switching converters, motor controllers, etc).....

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Thank you for the offer. I think what happened was that I slowed down the switching too much, overcompensating for an earlier design that switched field current at way too high a frequency and ran the field coil like it was a boost converter. I basically copied the Mopar design for my latest revision with an adjustment circuit added but had to guess at capacitor values, and I think I guessed an order of magnitude or so too high.

And I may have a line on a way to make an adapter to stock Mopar wiring as well - I ordered some contacts that may fit along with new capacitors yestereday.