High-voltage supply for an X-ray generator
AssigneeU.S. Philips Corporation
InventorLeo M. Mudde
Life of this patent
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Abstract
In order to increase the resonance frequency of a transformer, the secondary winding is divided into several (identical) coils, which are each connected to a corresponding individual bridge rectifier circuit. The outputs of the bridge rectifier circuits are connected in series and each coil is wound in a sense opposite to that of the immediately adjacent coil(s). Each coil is divided into two series-connected sections which are each wound in a corresponding individual winding compartment of the coil former. The series connection between the two coil sections extends through a passage at the bottom of the partition wall between the two winding compartments. Consequently, the coil ends are located on the outerside of each coil section so that it is possible to provide a simple connection with short connecting leads.
Claims12
A high-voltage supply for an X-ray generator comprising a direct voltage source, a converter for producing a voltage varying with time from the direct voltage of the source, a high voltage transformer having a secondary winding divided into a plurality of coils which are each included in a corresponding individual bridge rectifier circuit, means connecting the outputs of the rectifier circuits in series, characterized in that the secondary winding of the high-voltage transformer comprises a plurality of electrically distinct coils which are arranged in sequence side by side along the core of the high-voltage transformer, and each coil is connected to a corresponding one of a plurality of individual bridge rectifier circuits whose rectified outputs are connected in series of the same sequence, the winding senses of immediately adjacent coils being opposite to one another.
A high-voltage DC supply comprising:
- a pair of input terminals for connection to a time-varying source of voltage of a frequency above 60 Hz, a high-voltage transformer having a magnetic core with a primary winding thereon that is coupled to said input terminals and a secondary winding divided into a plurality of electrically distinct coils arranged in sequence side-by-side along the core of the transformer, a plurality of bridge rectifier circuits each having input terminals and output terminals, means connecting each of said coils to input terminals of a corresponding respective bridge rectifier circuit, means connecting the output terminals of the bridge rectifier circuits in series-aiding relationship to a pair of high-voltage DC output terminals, and wherein the coils of the secondary winding are wound on the core so that the winding senses of adjacent coils are opposite to one another.
A high voltage DC supply comprising:
- a pair of input terminals for connection to a time-varying source of voltage, a high-voltage transformer having a core with a primary winding thereon coupled to said input terminals and a secondary winding divided into a plurality of electrically distinct coils arranged in sequence side-by-side along the core of the transformer, a corresponding plurality of bridge rectifier circuits, each of said coils being connected to a respective one of said bridge rectifier circuits, means connecting output terminals of the bridge rectifier circuits in series-aiding relationship to a pair of high voltage DC output terminals, and wherein the coils of the secondary winding are wound on the core so that adjacent coils are wound in the opposite sense to one another so as to reduce the transformer leakage inductance.
Dependencies are inferred from the claim text.