This circuit was found in the August 1972 issue of Radio Electronics magazine. The circuit generates 4 types of signals as can be seen in the diagram. The maximum frequency is around 20 kHz.
This temperature sensor circuit was found in an old American documentation. The components used...
The normal use of a 4520 as a divide-by-16 counter is shown in Figure bellow. In the normal...
This circuit keeps the courtesy lights of a car on for a while after the doors are closed. The...