Based on NXP 74HC logic, this circuit can be adapted for various uses. The circuit can also be used with 12V power, and the circuit replaced with a common 4046 PLL.
With this circuit found in an American documentation from 1969 it is possible to vary the...
The reference voltage for this circuit can be selected digitally. The circuit is from Radio...
This circuit was found in an old factory documentation. The circuit uses single-junction...