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H6 - Federal Item Name Directory
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00001
ELECTRON TUBE
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FIIG: A516K0
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Entry Date: Apr-01-1974
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Concept:
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Status: A
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Applicability:
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Type: 0
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Definition: An enclosure, including two or more electrodes, in which a flow of electrons may occur through a vacuum or a contained gas. The electronic conduction takes place either by means of electrons emitted from a cathode or by ionization of the contained gas. Includes phototubes (photoemissive type only), Geiger-Mueller tubes, traveling wave tubes, cathode ray tubes and microwave tubes (Klystron, magnetron, or the like). Excludes: items whose primary purpose is to produce light energy; PHOTOELECTRIC CELL; and SEMICONDUCTOR DEVICE (as modified).
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Corresponding NIINs: 9,296
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