The purpose of this circuit, which we found in an August 1973 Radio Electronics issue, is to determine the characteristics of a tunnel diode.
Standing wave ratio or SWR is an important measure of whether all power from a transmitter is being...
This circuit is from 1976 Radio Shack documentation. It detects when rapid variations in the light...
This circuit was found in an Electronics Now of the 90s. It is intended for amplifying composite...