A method of designing transistor avalanche circuits with application to a sensitive transistor oscilloscope

THE OPERATION of a junction transistor in the avalanche mode bears a strong resemblance to that of the point-contact transistor. Unfortunately, the resemblance extends to the variation in characteristics between specimens, and this paper presents a simple method of designing avalanche circuits, based on a method developed for point-contact circuits, which will operate with any transistor without requiring adjustment. As an example the basic avalanche circuits are extended to an oscilloscope which uses a total of 11 transistors.