We found this circuit in an Intersil documentation. Temperature sensors are special components of the time, then supplied by Intersil itself.
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...