This circuit is from 1970 documentation. The SCRs are types of the era that can be replaced with 106 Series equivalents. The circuit is powered with 100 V dc.
This conventional circuit uses the 4017 to control incandescent lamps or LEDs, according to...
This circuit was found in the September 1993 Electronics Now magazine. It is based on the 555 and...
This interesting circuit with a neon lamp and a transistor was found in Radio Electronics magazine...