X-ray tube having a dual grid and dual filament cathode
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United States of America Patent
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Oct 3, 2017
Grant Date -
Jul 28, 2016
app pub date -
Jan 28, 2015
filing date -
Jan 28, 2015
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Abstract
A cathode head can include: a first electron emitter filament having a first size; a first grid pair defining walls of a first filament slot having the first filament therein, each grid member of the first grid pair being electronically coupled to different voltage sources; a second electron emitter filament; and a second grid pair defining walls of a second filament slot having the first electron emitter therein, each grid member of the second grid pair being electronically coupled to different voltage sources. The first grid pair can have a first and second grid members; and the second grid pair can have the second grid member and a third grid member. The first grid member and third grid member are electronically coupled to the same voltage source and the second grid member being electronically coupled to a different voltage source.
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