This circuit is from the 1992 Radio Electronics Handbook. The components used are from the period, with emphasis on the 2-digit display driver.
We found this circuit in a Japanese documentation from the 1960s. The frequency depends on the...
An article in Radio Electronics magazine from November 1962 taught how to connect two common...
This transistorized oscillator, a modification of the Colpitts oscillator, was found in the...