Electron tubes
An electron tube, such as a fluorescent display tube, is disclosed. The electron tube includes plural cathode filaments, each of which has the same diameter and a different length. In order to adjust the resistance of each filament, the plural filaments are not serially connected, but effective leng...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
20.01.2005
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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