First read this link to understand how amplidyne works. http://www.eugeneleeslover.com/USNAVY/CHAPTER-10-D.html after reading look at the picture below to undertand how the shorting technology works.
Another proof that shorting produces high magnetic field in the output coil can be found in patrick keely site http://www.free-energy-info.com/Chapt2.html then look for the coil shorting.
Hi Electric, I didn't read your links yet.Just skimmed them.
Interesting if you put a cap bank on one of the legs of the Ac out of the coil before it gets to the bridge,
They will charge and not effect a cap bank on the output of the bridge.
I found the best place to cause the short is when the magnet is center of the coil.
Thanks artv