The life testing of cathode-ray tubes

The principal requirement of cathode-ray-tube life-testing equipment is that it shall give an accurate description of the life performance of any type of cathode-ray tube in the shortest possible time. This object is achieved only after due consideration of all the factors involved, which include the safety of personnel from electric shock and mechanical implosion, the flexibility and reliability of apparatus and methods of arriving at an estimate of life before failure actually occurs. The paper describes how the problem has been approached and concludes that the desired flexibility in the apparatus can best be achieved in an open-bench type of equipment. This entails the provision of electrical safeguards to protect the operator.