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.
The National Semiconductor LM675 operational amplifier can provide up to 3 A of output current. In the...
We found this circuit in a 1969 Mullard documentation. The same configuration appears elsewhere in...
Found in a PE Hobbyst Handbook of 1991, this circuit was originally proposed to time photographic...