The purpose of this circuit, which we found in an August 1973 Radio Electronics issue, is to determine the characteristics of a tunnel diode.
This original 70s RCA circuit appears elsewhere on this site, including original RCA...
This circuit, which makes an astable multivibrator, was found in the March 1973 issue of Radio...
This circuit uses two unijunction transistors and only one capacitor, generating signals at a...