First pulse preserver (CB9259E)

This circuit was found in a 1967 EEE. The components are from that time, but the circuit can be implemented with modern equivalent components.

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Counter 26 to 32 with the 4017 (CB12134E)
In the figure we show how to expand the count from 26 to 32 with 4017 CMOS integrated circuits. The...
Time Switch (CB13965E)
This timer for time intervals of up to a few minutes was found in an English publication in 1965....
Timed Touch Switch (CB21298E)
This timing circuit was found in old documentation. The technology is CMOS. The supply can be made...