Duality as a Guide in Transistor Circuit Design
ROBERT LEE WALLACE, Gordon Raisbeck · Bell System Technical Journal · 1951
Because of a relationship which exists between the properties of a vacuum tube triode and those of a transistor, it is possible to start with a known vacuum tube circuit and to transform it into a completely different circuit suitable for use with transistors. The nature of this transformation is discussed and a number of examples are given.