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

US5731968A · kind A · utility

Assignee

• U.S. Philips Corporation · US

Inventors

• Heinz Van Der Broeck · Zülpich, DE
• Christoph Loef · Aachen, DE
• Hans Negle · Nahe, DE
• Bernhard Wagner · Fellbach, DE
• Martin Wimmer · Neubiberg, DE

Key dates

• Filing date: Dec 6, 1995
• Grant date: Mar 24, 1998
• Expiry date: Dec 6, 2015

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05G1/20
• WIPO field: Medical technology
• WIPO sector: Instruments

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.