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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of input resistance
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of equivalent noise resistance
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of output power and nonlinear distortion under test in the conditions of low-frequency amplification
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of grid cut-off voltage and grid current cut-off voltage
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of dynamic amplification factor and amplification asymmetry at LF
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of conversion transconductance and electrode currents under conversion conditions
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of direct interelectrode capacitances
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of insulation resistance between electrodes and between electrodes and all other elements
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of cathode heating time
WITHDRAWN published on 1.1.1982
Selected format:Measurements of the electrical properties of low-power electronic tubes--Methods of measurement of maximum anode dissipation power
WITHDRAWN published on 1.1.1982
Selected format:Latest update: 2026-01-23 (Number of items: 2 257 393)
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