X-ray apparatus comprising a power supply section for powering a

Details X-ray apparatus comprising a power supply section for powering a X-ray apparatus comprising a power supply section for powering a

1995-12-06

1998-03-24

Wong, Peter S.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363 17, 378111, 378112, H02M 3315

Patent

active

057319685

ABSTRACT:
An X-ray apparatus, includes a power supply section for powering an X-ray tube (4) with a high-voltage transformer (3) which has two groups of primary and secondary windings provided on the same transformer core, the coupling between the primary windings (16, 26) belonging to different groups being weaker than the coupling between primary and secondary windings (for example, 16, 31) belonging to the same group, the primary windings of the two groups being connected to two inverters (1, 2) which operate at the same frequency. Control of the power at the secondary side is improved in that the inverters are operated at a fixed frequency and with a duty cycle which can be independently controlled.

REFERENCES:
patent: 4504895 (1985-03-01), Steigerwald
patent: 4514795 (1985-04-01), Van der Zwart
patent: 4574340 (1986-03-01), Baker
patent: 4742535 (1988-05-01), Hino et al.
patent: 4797908 (1989-01-01), Tanaka et al.
patent: 4823250 (1989-04-01), Kolecki
patent: 5123038 (1992-06-01), Negle et al.
patent: 5155754 (1992-10-01), Ebersberger et al.
patent: 5272612 (1993-12-01), Harada et al.
patent: 5602897 (1997-02-01), Kociecki et al.

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