X-ray generator

Details X-ray generator X-ray generator

H - Electricity

05

G

355/29

H05G 1/12 (2006.01) H05G 1/66 (2006.01)

Patent

CA 1040317

Abstract X-ray generators where the voltage on-the X-ray tube is controlled by means of a control triode are known. Both anode and cathode are then at high voltage potential, so that a comparatively wide air gap between the rotor and the stator of rotary anode X-ray tube is required. The electric energy transferred from the stator to the rotor is then comparatively small, so that the rotary anode reaches all adjusted speed only comparatively slowly. An X-ray generator according to the invention combines the advantages of a circuit comprising a control triode and a fast acceleration of the rotary anode in that the rotary anode X-ray tube and a control triode are connected in series the junction of the anode of the X-ray tube and the cathode of the control triode being earthed. As a result, substantially no potential difference exists between rotor and stator, so that a very "narrow" air gap can be used, with the result that more efficient use of power and, for the same stater dimensions and the same stator power, a substantially faster acceleration of the rotary anode is achieved.

224027

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