Constant current source (CB20484E)

This circuit uses a current regulator from the 90's. This component is uncommon nowadays. The transistor admits equivalent.

Position detector (CB8031E)
Found in a 1970 publication by General Electric, this circuit makes use of a mobile...
Delayed switch circuit (CB24443E)
This circuit switches on an external load after a certain interval given by the capacitor. The...
Priority indicator (CB22111E)
Using common SCRs like the TIC106, this circuit is loaded with incandescent bulbs, but can be...