This circuit was found in a 90s EDN. Its purpose is to increase the efficiency of operational amplifiers. Power MOSFETs and inverted zeners support equivalents.
Found in a 1964 Electronic Design, this circuit protects the transistors of a complementary output stage. The...
Found in a 70s RCA manual, this circuit uses transistors from the era. Equivalent types can be...
This circuit found in a 1988 documentation consists of a timer or sequential timer controller. The...