This transistorized circuit appeared in a Radio Electronics magazine in March 1958. The frequency range depends on the tuned circuit, being within a few megahertz.
Using an era germanium transistor, this 1960s circuit reverses the phase of relatively low...
This circuit uses amplifiers from the 60's American company Microlin. The circuit can be designed...
The idea of this circuit found in a Radio Electronics from January 1966. The idea of the...