This circuit from a 1966 General Electric manual makes use of an SCS. The time is given by the emitter capacitors of the unijunction transistor.
This circuit, well known, since it is already present in other points of this website, is from an...
This 12 V source provides 12A of maximum current and is suitable for powering mobile equipment. The...
This circuit is from a 1976 documentation. It uses an operation that is still common in our...