X-ray apparatus comprising a power supply section for powering an X-ray tube
First Claim
1. An X-ray apparatus, comprising a power supply section for powering an X-ray tube with a high-voltage transformer which comprises two groups of primary and secondary windings provided on the same transformer core, the coupling between the primary windings from different groups being weaker than that between primary and secondary windings belonging to the same group, the primary windings of the two groups being connected to two inverters which operate at the same frequency, each inverter comprising a different set of four switches forming a full bridge, and means for operating the inverters with a fixed frequency and with an independently controllable duty cycle.
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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.
33 Citations
9 Claims
- 1. An X-ray apparatus, comprising a power supply section for powering an X-ray tube with a high-voltage transformer which comprises two groups of primary and secondary windings provided on the same transformer core, the coupling between the primary windings from different groups being weaker than that between primary and secondary windings belonging to the same group, the primary windings of the two groups being connected to two inverters which operate at the same frequency, each inverter comprising a different set of four switches forming a full bridge, and means for operating the inverters with a fixed frequency and with an independently controllable duty cycle.
Specification