Heating circuit for a filament of an X-ray tube

Details Heating circuit for a filament of an X-ray tube Heating circuit for a filament of an X-ray tube

1984-09-26

1986-02-25

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

378105, H05G 134

Patent

active

045731845

ABSTRACT:
The dissipation of the filament power of an X-ray tube is controlled by a heating circuit including a voltage resonance type DC-to-DC converter and a filament current detector/controller. The DC-to-DC converter is comprised of a switch, a capacitor, a damper diode and a transformer. These circuit elements constitute a voltage resonance type switch. A DC voltage is interrupted and applied to the primary winding of the transformer. The AC voltage is induced to the secondary winding of the transformer, thereby heating the filament of the X-ray tube. In accordance with the load curve of the X-ray tube, the filament heating voltage can be controlled within a control range defined by the resonant conditions of the switch.

REFERENCES:
patent: 4253048 (1981-02-01), Osako
patent: 4450577 (1984-05-01), Sato
patent: 4520494 (1985-05-01), Auta

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