This circuit is used to detect PLL signals from the 4046 IC. The circuit is from an Electronics Now from October 1994. The indication is made through LEDs.
The basic configuration for a 4017 when used as a decade divider with one-of-ten decoded outputs...
This circuit was found in American documentation from the 90's. The circuit applies to any...
The great advantage of the circuit shown in the figure is the fact that its frequency is...