Some properties and circuit applications of super–alpha composite transistors

A three-terminal amplifying device having the characteristics of a super-alpha Junction transistor can be constructed by making suitable interconnections between ordinary medium-alpha Junction transistors. It is shown that the circuit properties of such a device are very similar to those of a vacuum tube for many applications. Voltage-follower and voltage-amplifier circuits using composite transistors are described. Characteristics of two-stage and three-stage composite transistors are illustrated graphically.