The JETEC Approach to the Tube-Reliability Problem

The need for reliability in electron-tube operation has increased several fold during the past few years and has far outdistanced corresponding quality-evaluation methods. Not only has this been evidenced by requirements in civilian applications, but also, and even more important, in military fields where several thousand tubes may be needed in a single piece of equipment. In an attempt to overcome the deficiency in present evaluation methods an entirely new approach is offered-that of analyzing and specifying tube-population mortality rates and tube-population characteristic depreciation rates. This concept shifts the emphasis from the individual to the group, and is more susceptible to scientific treatment and evaluation.