This circuit was suggested by General Electric in a 1965 documentation. The circuit can be implemented with equivalent SCR.
Similar to other circuits found in this section, this circuit is from a 1996 Electronics World;...
This two-digit timer was found in the 1983 Special Projects issue of Radio Electronics magazine. The...
The circuit shown is from Motorola's Linear Databook published in 1990. As the CI is uncommon...