This circuit was suggested by documentation from a 1980’s General Electric. The triacs determine the maximum load controls. The components in parallel with the load are varistor type protectors.
The basis of this circuit is the 723 integrated circuit, not very common today. We obtained this...
This circuit was found in an article in Radio Electronics magazine. The issue is from July 1992...
The TDK MLH2012 22 nH power inductors for RF applications with a maximum current of 1.85 A can now be...