Found in Fairchild documentation from the 90s, this circuit generates signals with the characteristics given next to the diagram. The power supply must be symmetrical.
This circuit is from 1993 documentation. The table provides the values of R3 and R4 according to...
One touch of the push button S1 and the circuit LEDs shown in the figure start to flash rapidly. The...
This circuit was obtained in a 90s American documentation. The integrated circuit used is uncommon...