This circuit was obtained from Dutch documentation from 1967. It uses transistors of the time which can be the BFY50 and 51 for the output and the BC series for the others.
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...