This circuit was found in a 90s Silicon Chip documentation. The current of the transformer is 1 A maximum, a value given by the integrated circuits used.
This circuit is in the very datasheet of Texas Instruments that manufactures the component...
It can be obtained from Mouser Electronics the new 1,500 W RF high power transistor MRF1K50H fro m...
This proximity relay circuit was found in the July 1990 Radio Electronics magazine. The supply...