This is a transistor flip-flop suggested by General Electric in a 1966 paper. The transistors are of the time and can be used equivalents.
Found in American documentation from the 90's, this circuit activates a 12 V sensitive relay. The...
This circuit, suggested by Motorola, provides a voltage of 15 V under a current of up to 2 A. The...
Among other applications, the 1960 Sylvania transistor manual indicates this timer for chess...