Described in an article in the March 1979 issue of Radio Electronics magazine, this generator was used in an audio test station. The frequencies are given by the capacitors.
This frequency modulated light transmitter is from a 1990s documentation. The circuit may use...
This type of configuration, which appears elsewhere in this section, was found in a 1965...
This circuit is from an Argentine publication from the 1970s but can still be assembled with...