Found in an American documentation from the 90s, this circuit uses small low voltage lamps (6 to 12 V0. The circuit can be adapted to use LED indicators.
This circuit is suggested by National Semiconductor and can serve as a basis for an excellent...
This is a circuit that should not be used for readers interested in a fair game. The circuit...
A simple version of VCO CMOS using 4049 inverters is shown in the figure. This circuit can be...