The influence of the internal correction voltage on the proper ratings of receiving-type tubes

Uncertainties in establishing rated values for the low-frequency characteristics of receiving-type tubes are discussed, and it is shown that when a measure of the internal correction voltage is ascertained by the use of generally available data, the problem is greatly simplified. The method of applying it in properly rating the characteristics is described. The nature of the correction voltage is briefly outlined in a manner intended to be helpful in problems of design and quality control.