Enough cap's n gear there to jump start a jumbo jet son.

I better go back to the scrap years and look for one then.
Not sure about the health of the caps. They seem self discharge awfully quick. (Down from 24V to 12V in less than 60 seconds) and I hadn't got any test equipment to measure that.
I ended up striping all the control circuitry, the power supply shuts itself of after 5 minutes. Even with q load. I'm guessing the control circuit is expecting some communication from the machine.
So back to simply a transformer and bridge rectifier. Though I stuffed up and list the photos I took when dewiring it, they got compromised, thank you sd card, so I'm not sure I reconnected the transformer the way it is intended to be. Though I now have readings that make more sense, 18.5V rms at the transformer output and 25V once rectified. Could it be that because of all the extra circuitry, the output of the transformer was distorted and giving me a false reading?
The transformer is a bit unusual, here is a very crude drawing of it

There is an input winding, blue on the sewing (actually multiple windings to accommodate for different main voltages) separated from the other winding by a magnetic shunt like in a microwave transformer. Then on the other side of the shunt, is one winding, the green one, with an offset "center" tap that outputs about 300v (240 and 60 between ends and tap) that was somehow connected to two 20 microfarads 400V capacitors. I couldn't remember how that was connected.
And the dawns red winding outputs the 18.5V (with two tap, depending on the main frequency)
In didn't load the transformer again as I have first to work out what that capacitor is supposed to do.
Does that configuration have a specific name that I can search to read more about it.
Could I have drawn out wrong and it would be more like this: and the green winding would magnetize the shunt more or less to regulate the transformer?

Edit:
I think I found it. It matches the description of what is called a ferroresonant transformer. I have to read more about it but I'm assuming that the taps on the middle winding are to connect the capacitor on one or the other depending on the main frequency.