60151-9-1966 Measurements of the Electrical Properties of Electronic Tubes and Valves Part 9: Methods of Measuring the Cathode-Interface Impedance (Edition 1.0)
Mesures des caracterisiques electriques des tubes electroniques Partie 9: Methodes de mesure de l?impedance d?interface de cathode (Edition 1.0)
Measurements of the Electrical Properties of Electronic Tubes and Valves Part 9: Methods of Measuring the Cathode-Interface Impedance (Edition 1.0) 是非强制性国家标准，您可以免费下载前三页
The main purpose of this Recommendation is to define means by which interface impedance may be measured@ rather than to describe precise procedures for pre-processing@ stabilizing and operating the tubes or valves to be measured@ although the tube or valve operating conditions@ under which the measurement of interface impedance may be made@ are known to have a substantial effect on the results obtained. It is also an objective of this Recommendation to describe means for evaluating the performance of interface impedance measuring equipment with respect to : Accuracy as a function of the transconductance of the tube or valve being measured. Accuracy as a function of the resistance of the interface. Accuracy as a function of the time constant of the equivalent interface network. The measuring methods and procedures described in this Recommendation are designed to provide information on the following cathode-interface impedance characteristics of tubes or valves : The presence of cathode-interface impedance. The equivalent resistance of cathode-interface impedance. The equivalent capacitance of cathode-interface impedance. Clause 7 outlines precautions to be taken and results to be expected under certain conditions of operation of the tubes or valves being measured for interface impedance characteristics.