We found this CMOS circuit based on the PLL4046 in the December 1989 issue of Radio Electronics magazine. The circuit is powered by a 9 V voltage.
This power source, obtained in a 1973 publication, suggests the use of partially burned germanium...
This circuit was obtained from an Electronic Design from 1964. Transistors admit modern...
The circuit is from the 1994 National Semiconductor Linear Applications Handbook but can be...