This circuit is from a 1980's documentation for telecommunications. The circuit is used in SSB and the diodes must be suitable types for the application. The audio input is low impedance.
June 2017 - In its huge line of available components, Mouser Electronics highlights the new...
The circuit below was found in the March 1990 issue of Radio Electronics magazine. The circuit...
This transistorized astable for LEDs was found in the January 1992 issue of Radio Electronics...