This adjustable frequency circuit was found in December 1986, Radio Electronics magazine. The base frequency is given by C1 and the power supply must be 5 V.
We found this circuit in a Radio Electronics magazine from January 1975. The transistors are...
This circuit was found in an American publication in 1967. The circuit uses an operational device of the...
A frequency divider for digital signals can be constructed based on a single 4018 integrated...