This circuit was found in a 1945 publication. The circuit was stated to be part of a walk talkie. Note that, as it is a portable assembly, it was powered by batteries. The jack was for microphone insertion.
To use the instrument for AC measurement, the tips are A and B. For CC use tips A or B for...
We found this conventional version of a single-transistor oscillator in the January 1996 issue of...
This power supply was found in the December 1993 issue of Electronics Now magazine. Power...