A survey of quality and reliability standards in electronic valves for service equipment

The paper describes the factors which are involved in the use of electronic valves in Service equipment at the present time and the underlying principles which are involved in the procedure and methods adopted to obtain the supply of satisfactory valves. It discusses the widening of the field of application of the electronic valve, the growing complexity of modern Service equipment and the conditions of shock and vibration which have to be withstood. The need for greater reliability is examined and an indication given of the very low failure rate which it is necessary to achieve.