High Power Alarm (CB20475E)

We found this circuit in a Popular Electronics from the 90's. The circuit uses three SCRs to trigger the loads.

Who is the fast for 4 competitors (CB3859E)
We found this circuit in a Poptronics from 1998. The circuit can be extended to more competitors...
4-channel switch (CB7143E)
We found this circuit in documentation from the National Semiconductor of the 1980s. The circuit...
Monostable Using the 4027 (CB131E)
A configuration like the one used with the 4013 is also suitable for the 4027. The amount of time...