The frequency of this circuit can be varied from zero. The circuit uses the CMOS 4046 and was found in the November 1984 issue of Radio Electronics magazine. The base frequency is given by C1.
This circuit was obtained from Dutch documentation from 1964. The components are of the time, but...
This circuit receives, through a coil, audio signals emitted by another coil connected to the...
This configuration that appears elsewhere on this website and in this section was suggested by...