31.100 电子管 标准查询与下载
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This part of IEC 61643 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c..They are defined as a gap, or several gaps with two or three metal electrodes hermetically sealed so that gas mixture and pressure are under control. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard contains a series of test criteria, test methods and test circuits for determining the electrical characteristics of GDTs having two or three electrodes. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical. This part of IEC 61643 – does not deal with mountings and their effect on GDT characteristics. Characteristics given apply solely to GDTs mounted in the ways described for the tests; – does not deal with mechanical dimensions; – does not deal with quality assurance requirements; – may not be sufficient for GDTs used on high-frequency (>30 MHz); – does not deal with electrostatic voltages; – does not deal with hybrid overvoltage protection components or composite GDT devices.
Components for low-voltage surge protective devices - Part 311: Performance requirements and test circuits for gas discharge tubes (GDT)
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Gives general requirements and precautions which apply when making measurements on low-power oscillator klystrons.
Measurement of the electrical properties of microwave tubes. Part 5: Low-power oscillator klystrons
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This Recommendation is based on current practice for the measurement of cross-modulation — not intermodulation — in electronic tubes and valves. It should not be regarded as a Recommendation in the sense of a standard, because a more detailed description of the measuring methods is needed, if measuring results on the basis of these principles have to be comparable within definite tolerances.
Measurements of the electrical properties of electronic tubes and valves - Part 21: Methods of measurement of cross-modulation in electronic tubes and valves
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This Recommendation is based on current practice on the measurement of electrode resistance, transconductance, amplification factor, conversion resistance and conversion transconductance. It should not be regarded as a Recommendation in the sense of a standard, because a more detailed description of the measuring methods is needed if measuring results on the basis of these principles have to be comparable within definite tolerances.
Measurements of the electrical properties of electronic tubes and valves - Part 12: Methods of measuring electrode resistance, transconductance, amplification factor, conversion resistance and conversion transconductance
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Gives general requirements and precautions which apply when making measurements of the electrical properties of microwave tubes. It deals also with general methods of measurement for all devices for oscillator devices and for amplifier tubes.
Measurement of the electrical properties of microwave tubes - Part 2: General measurements
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1.1 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. 1.2 It is also an objective of this Recommendation to describe means for evaluating the performance of interface impedance measuring equipment with respect to: 1.2.1 Accuracy as a function of the transconductance of the tube or valve being measured. 1.2.2 Accuracy as a function of the resistance of the interface. 1.2.3 Accuracy as a function of the time constant of the equivalent interface network. 1.3 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: 1.3.1 The presence of cathode-interface impedance. 1.3.2 The equivalent resistance of cathode-interface impedance. 1.3.3 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
Measurements of the electrical properties of electronic tubes and valves. Part 9: Methods of measuring the cathode-interface impedance
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This document outlines conditions to be followed when measuring heater or filament current. It does not include measuring methods.
Measurements of the electrical properties of electronic tubes and valves - Part 2: Measurement of heater or filament current
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This Recommendation is based on current practice of the measurement of cathode heating time and heater warm-up time. It should not be regarded as a Recommendation in the sense of a standard, because a more detailed description of the measuring methods is needed if measuring results on the basis of these principles have to be comparable within definite tolerances. Modifications of detail may be made to the circuits described provided they do not change either the principle of measurement or the degree of refinement of the circuit. Any change made should maintain the required correlation of the measuring results.
Measurements of the electrical properties of electronic tubes and valves - Part 8: Measurement of cathode heating time and heater warm-up time
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This recommendation deals with measurements of intermodulation products of importance in single side-band, multiplex, independent carrier and other signal processing applications of radiofrequency linear amplifier tubes. Several methods of measurement are known, e.g. : — the two-frequency method; — the three-frequency method; — the simulated Gaussian noise method. This recommendation is concerned with the two-frequency method.
Measurements of the electrical properties of electronic tubes and valves. Part 27: Methods of measurement for inter modulation products in transmitting tubes
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This Recommendation is based on current practice on the measurement of thyratron pulse modulators. It should not be regarded as a Recommendation in the sense of a standard, because a more detailed description of the measuring methods is needed if measuring results on the basis of these principles have to be comparable within definite tolerances.
Measurements of the electrical properties of electronic tubes and valves. Part 20: Methods of measurement of thyratron pulse modulators
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This Recommendation is based on current practice on the measurement of spurious and unwanted electrode currents. It should not be regarded as a Recommendation in the sense of a standard, because a more detailed description of the measuring methods is needed if measuring results on the basis of these principles have to be comparable within definite tolerances. This Recommendation does not apply to gasfilled tubes or valves.
Measurements of the electrical properties of electronic tubes and valves. Part 15: Methods of measurement of spurious and unwanted electrode currents
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This Recommendation refers to hard (i.e. vacuum) tubes and valves for pulse modulator applications. Measurements on such tubes and valves are commonly made using nominally rectangular pulses and this will be assumed to be the general case. The definitions and methods may, of course, be extended to include other forms of pulse. Important warning Vacuum switch tubes which operate at voltages in excess of 16 kV can be expected to produce X-rays during the " turn-on " and " turn-off " periods of their " on " periods, and some very high voltage modulators may produce considerable quantities of soft X-rays during the " on " periods. Operators should ascertain that unsafe levels of radiation do not exist. The manufacturer should be consulted to determine the necessity for and the general design of suitable radiation shields.
Measurements of the electrical properties of electronic tubes and valves. Part 23: Methods of measurement of vacuum pulse modulator tubes and valves
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This Recommendation deals with electronic tubes which perform the function of converting an optical image into electrical signals. These tubes are commonly called "television camera tubes" or "television pick-up tubes". At the present time, they fall into two classes: a) tubes having a photoemitting sensitive surface; b) tubes having a photoconductive sensitive surface. This Recommendation deals only with the image orthicon in class a) and with the vidicon in class b). Other tubes and/or classes may be added as the need arises.
Measurements of the electrical properties of electronic tubes and valves. Part 26: Methods of measurement for camera tubes
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This Recommendation is based on current practice of the measurement of audio-frequency output power and distortion. It should not be regarded as a Recommendation in the sense of a standard, because a more detailed description of the measuring methods is needed if measuring results on the basis of these principles have to be comparable within definite tolerances.
Measurements of the electrical properties of electronic tubes and valves. Part 10: Methods of measurement of audio-frequency output power and distortion
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Measurements of the electrical properties of electronic tubes and valves－Part 2：Measurement of heater or filament current
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Measurements of the electrical properties of electronic tubes and valves－Part 0：Precautions relating to methods of measurement of electronic tubes and valves
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Measurements of the electrical properties of electronic tubes and valves－Part 3：Measurement of equivalent input and output admittances
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Preparation of outline drawings for cathode-ray tubes, their components, connections and gauges
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Kinds and dimensions of bases, caps and gauges for receiving tubes
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Measurements of the electrical properties of electronic tubes and valves－Part 1：Measurement of electrode current
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