This proximity relay circuit was found in the July 1990 Radio Electronics magazine. The supply voltage should be according to the relay used.
This circuit measures the RF power of oscillators and small transmitters in the range of 0.05 to...
August 2017 - The new refrigeration sensors for use in batteries, cooling systems of Amphenol...
We found this circuit in an old American manual. The formulas allow the gain to be calculated as a...