This 32 A circuit uses SCRs of the time. We found it in a 90s General Electric documentation. The transformer is a commercial type of the time.
This configuration that appears several times with variations on this site is from old American...
This configuration (somewhat critical, as the imbalance of characteristics between transformers can cause...
This circuit is from a Popular Electronics of the 90's. Any power MOSFET can be used. The circuit...