Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1995-07-19
1997-08-12
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
313537, 313542, H01J 3150
Patent
active
056568088
ABSTRACT:
Disclosed is a method for the use of an X-ray image amplifier tube comprising a succession of electrodes, among them a photocathode. This X-ray image intensifier tube may have, alternately, an off state and an operating state. The method consists of the application, to the photocathode, of an operating voltage that is a substantially zero voltage when the X-ray image intensifier tube is in an operating state and a positive turning-off voltage greater than the operating voltage so that the X-ray image intensifier tube is in the off state. Application is notably to X-ray image intensifier tubes used in sets that work alternately.
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Barjot Damien
Deon Jean-Marie
Girard Alain
Lacoste Yvan
Marche Eric
Lee John R.
Thomson Tubes Electroniques
Westin Edward P.
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