This circuit, for frequencies up to 100 kHz, was found in American documentation from 1970. The circuit can serve as a reference for projects with modern equivalent components.
Figure 1 shows how the 4029 can be connected to count up to 10 and also up to 18. If pin 9 is...
This circuit was found in the February 1992 issue of Radio Electronics magazine. The circuit...
This low current solenoid driver was found in an ancient American documentation. The solenoid must be...