Using a standard multimeter, this circuit from a 73 magazine for radio amateurs provides an output proportional to the inductance under test. The circuit is TTL and must be powered with 5 V.
Based on an operational of the time, this Popular Electronics circuit can be designed with any...
This circuit was found in a 1980 documentation. It is an interesting 3-track radio circuit whose...
This 100 Hz filter was found in the August 1993 issue of Electronics Now. The components can be...