"Nomographs for modification of electron tube parameters"

This paper discusses the theory and use of three tube-design monographs which make it possible to determine quickly the required modifications of physical parameters which will provide desired alterations in tube characteristics. A brief description is given of the electron-tube theory upon which the nomograph design is based. The use of the nomographs is explained by means of the solution of some typical design problems. The nomographs, which are applicable to many diode, triode, and pentode problems, include physical parameters such as interelectrode spacings, wire sizes and grid tpi’s, together with tube characteristics.