In the figure we have a basic PLL circuit with the LM567 or equivalent. The circuit is from a 1977 documentation.
We found this circuit in a publication of 1990. With the changes it can be mounted easily today....
This circuit was obtained from an Electronic Design from 1964. Transistors admit modern...
Bourns 15KPA SD Q TVS Diodes Available from Mouser Electronics, Bourns TVS 15PA-SD-Q diodes can...