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...

Full description

Saved in:
Bibliographic Details
Main Authors TAKAYAMA KATSUMI, YONEZAWA YOSHIHISA, NOHARA YASUHIRO
Format Patent
LanguageEnglish
Published 20.01.2005
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary: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 length of each filament, which contributes to the emission of electrons, is adjusted without serially connecting plural filaments.
Bibliography:Application Number: US20040890930