This circuit was obtained from a 1977 FET manual. The circuit measures inductances using a signal generator as a reference. The range is from 60 uH to 60 000 H. The FET can be a BF245.
This common operational PLL circuit was found in a Popular Electronics 90’s. The power supply need...
This 455 kHz IF calibration circuit uses a 4,096 MHz crystal. The circuit can be powered by...
August 2017 - The new refrigeration sensors for use in batteries, cooling systems of Amphenol...