This standard specifies the test method for the high-frequency loss of the insulator between the electrodes of the transmitting tube. This standard is applicable to the test of the high-frequency loss of the insulator between the electrodes of the space charge controlled oscillation modulation adjustment and power amplifier tube with anode dissipation power above 25W. GB/T 3789.18-1991 Test method for electrical performance of transmitting tube Test method for high-frequency loss of the insulator between the electrodes GB/T3789.18-1991 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Test methods for electrical properties of transmitting tubes
Test methods for high frequency loss of interelectrode insulatorsSubject content and scope of application
This standard specifies the test methods for high frequency loss of interelectrode insulators of transmitting tubes. GB/T 3789: 18—91bzxZ.net
Replaces GB3789.18—83
This standard is applicable to the test of high frequency loss of interelectrode insulators of space charge controlled oscillation, modulation, regulation and power amplifier tubes with anode dissipation power of more than 25W.
2 Standards
GB/T 3789. 1
Test methods for electrical properties of transmitting tubes General
Test methods for electrical properties of transmitting tubes Test methods for grid reverse current GB/T 3789. 4
GB/T3789.15 Test methods for electrical properties of transmitting tubes Test methods for output power 3 Terminology
High frequency lass for interelectrode insulators High frequency lass for interelectrode insulators refers to the ability of the interelectrode insulator to withstand high frequency electric field under specified working conditions. 4 Test equipment and test rules
Test equipment and test rules shall comply with the provisions of GB/T3789.1. 5 Test methods
5. 1 Add the filament voltage and each pole voltage according to the specifications. 5.2 Under the highest working rate specified in the detailed specification, make the circuit resonate and the load match the best, and within the time specified in the detailed specification (keep the working state unchanged), check the surface breakdown, cracking and permanent deformation of the insulator between the electrodes. After the test, according to the provisions of the detailed specification, the tested tube is tested for the first grid reverse current according to GB/T3789.4 and the output power is tested according to GB/T3789.15. Additional notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was drafted by the Electronic Standardization Institute of the Ministry of Machinery and Electronics Industry and 779". Approved by the State Bureau of Technical Supervision on 1991-08-15 and implemented on 1992-04-01
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