IEC 60100:1962 pdf download,Methods for the measurement of direct interelectrode capacitances of electronic tubes and valves.
IEC 60100:1962 establishes methods for measuring the direct interelectrode capacitances of electronic tubes and valves. These capacitances are the effective capacitances existing between the electrodes of a vacuum tube, such as the cathode, control grid, screen grid, suppressor grid, and anode, when the other electrodes are connected in specified ways.
The document is intended to provide reproducible measurement results for tube development, production inspection, type testing, technical documentation, and comparison between different valves. It defines the measurement principles, circuit arrangements, terminal connections, operating conditions, and procedures needed to determine capacitance values while minimizing the influence of external wiring, fixtures, stray capacitance, leakage, and measurement equipment.
The standard also addresses the distinction between direct capacitances and capacitances that may appear because of internal electrode geometry or measurement configuration. It provides guidance for selecting suitable alternating-current test signals, maintaining appropriate electrode potentials, balancing or correcting the measuring circuit, and calculating the capacitance from the observed electrical quantities. Results should be reported together with the relevant tube type, electrode connections, test conditions, frequency, and measurement uncertainty or accuracy information.
The methods are designed for electronic tubes and valves rather than semiconductor devices. Overall, IEC 60100:1962 creates a common technical basis for accurately characterizing internal capacitive coupling, supporting circuit design, high-frequency performance evaluation, manufacturing consistency, and reliable interchangeability of electronic tubes and valves.