This standard specifies the test method for the vibration stability of transmitting tubes. This standard is applicable to the test of the vibration stability of space charge controlled oscillation, modulation, adjustment and power amplifier tubes with anode dissipation power above 25W. GB/T 3789.22-1991 Test method for electrical properties of transmitting tubes Test method for vibration stability GB/T3789.22-1991 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 vibration stability
Meeasurements of the electrical properties of transrnitting tubesMeasuring methods of vibratlon stabllty1 Subject content and scope of application
This standard specifies the test methods for vibration stability of transmitting tubes. GB/T 3789. 22—91
Replaces GB 3789, 22—83
This standard applies to the test of vibration stability of space charge controlled oscillation, modulation, adjustment and power amplifier tubes with anode dissipation power above 25W.
Cited standards
GB/T3789.1 Test methods for electrical properties of transmitting tubes General 3 Terminology
Vibration stability
Vibration stability
Vibration stability refers to the stability of electrical parameters under specified mechanical vibration conditions. 4 Electric bed schematic diagram
In the diagram:
Voltmeter or other type of test instrument, the scale is the effective value of sinusoidal voltage, the frequency range should meet the test conditions; a simple harmonic vibration device, its waveform distortion should not be greater than 10%; G
Non-inductive resistor. Its error should not be greater than the above%. The resistance value should be specified in the detailed specifications, 1. - resistor. The resistance value should be specified in the detailed specifications: C
-capacitor. Its capacitive reactance should comply with:
Approved by the State Administration of Technical Supervision on August 15, 1991 Rpy
Implementation on April 1, 1992
GB/T3789.22-91
In the formula: - Input impedance of PV;
の-Angular frequency of a simple harmonic vibration device.
5 Test equipment and test ruleswwW.bzxz.Net
Test equipment and test rules should comply with the provisions of GB/T3789.1. 6 Test method
6.1 Fix the tube to be tested firmly on the vibration device that vibrates according to the law of simple harmonic motion. 6.2 Add the filament voltage and the voltage or current of each pole according to the specification. 6.3 Connect the vibration device according to the vibration conditions and time specified in the detailed specification, and measure the AC component on the anode load resistor R. by the PV meter. Additional remarks:
This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is drafted by the Electronic Standardization Institute of the Ministry of Machinery and Electronics Industry and Factory 779.
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