US 7,050,539 B2 · Power supply for an X-ray generator

Abstract

A power supply for X-ray generators which includes at least one inverter (11, 12, 13), at least one transformer (111, 121, 131) and at least one voltage cascade (112, 122, 132) for generating a supply voltage for an X-ray tube (15). In order to increase the output power that can be achieved with a comparatively small weight and a low ripple or output capacitance, the voltage cascade is conceived in respect of its capacitances and the stray inductance of the transformers (111, 121, 131) in such a manner that it can be made to operate in the resonance mode by appropriate control of the inverter. In respect of the properties mentioned it is notably advantageous to integrate a two-phase embodiment or three-phase embodiment with an X-ray system so as to form a compact tank generator.

Claims6

Dependent claims

A power supply comprising:

at least two inverters;
at least two transformers, each transformer having an input winding connected with one of the inverters and an output winding free of a center tap;
a plurality of voltage cascades, each voltage cascade including a plurality of stages defined by diode bridges which diode bridges are connected with each other by (a) sliding capacitors and (b) stage connection points, at least one voltage cascade being connected across the center tap free output winding of each of the transformers;
an output connection lead connecting a final stage of each of the voltage cascades with a power supply output;
and
a control circuit which generates a switching voltage applied to the inverters to operate to impress a resonance current on the voltage cascades.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/497,620Filed 5 Dec 2002

Priority

DE 101 59 8976 Dec 2001

Published

US 2005/0018815 A127 Jan 2005

Granted

23 May 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H02M 7/103
Arranged for operation in series, e.g. for multiplication of voltage: containing passive elements which are ordered in cascade on one source
H02M 3/285
Using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC: single converters…
H05G 1/12
Power supply arrangements for feeding the X-ray tube: with DC or rectified single-phase AC or double-phase
H02M 7/4815
Using discharge tubes with control electrode or semiconductor devices with control electrode: resonant converters

Power supply for an X-ray generator

Life of this patent

Power supply for an X-ray generator

Life of this patent

Abstract

Claims6