Other versions exist on this site from various publications. This one is from the Radio Electronics Experimenter from 1990. The bargraph circuit uses the UAA170.
Found in a manufacturer documentation from the 1980s, this circuit supplies currents that depend on...
This astable multivibrator is one of the many configurations that we have in this section and on...
This dimmer or light control for incandescent light bulbs or even small heaters, is one of many...