High voltage generator
AssigneeNikon Metrology NV
InventorsJanusz Zywicki, Roger Hadland
Life of this patent
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Abstract
Disclosed is a high-voltage generator for an x-ray apparatus. The generator comprises a voltage multiplier having a high-voltage output terminal and first and second alternating-current input terminals, an output transformer coil (12) having first and second output terminals respectively electrically connected to the first and second input terminals of the voltage multiplier, and an input transformer coil (11) having first and second input terminals and being arranged coaxially with and inductively coupled to the output transformer coil. The input and output transformer coils are relatively axially movable. Disclosed is also an x-ray apparatus using the high-voltage generator, a method of configuring a high-voltage generator and a method of configuring a high-voltage apparatus.
Claims19
A high-voltage generator for an x-ray apparatus comprising:
- a voltage multiplier having a high-voltage output terminal and first and second alternating-current input terminals;
- an output transformer coil having first and second output terminals respectively electrically connected to the first and second input terminals of the voltage multiplier;
- and
- an input transformer coil having first and second input terminals and being arranged coaxially with and inductively coupled to the output transformer coil, wherein:
- the input and output transformer coils are relatively axially movable.
A high-voltage generator for an x-ray apparatus comprising:
- a voltage multiplier having a high-voltage output terminal, first and second alternating-current input terminals and a reference terminal;
- and
- a transformer having an output transformer coil, the output transformer coil having first and second output terminals respectively electrically connected to the first and second input terminals of the voltage multiplier and a centre tap arranged at a position on the coil intermediate of the first and second output terminals connected to the reference terminal;
- wherein the transformer is adjustable such that the voltages provided at the first and second output terminals relative to the centre tap are adjustable, and
- wherein the voltage multiplier is configured to generate a rectified DC voltage, relative to the reference terminal, at an output terminal, based on voltages on the first and second input terminals oscillating in anti-phase relative to one another, about the reference voltage of the reference terminal.
A high-voltage generator for an x-ray apparatus comprising:
- a voltage multiplier having a high-voltage output terminal, first and second alternating-current input terminals and a reference terminal;
- and
- a transformer having an input transformer coil and an output transformer coil, the output transformer coil having first and second output terminals respectively electrically connected to the first and second input terminals of the voltage multiplier and a centre tap arranged at a position on the coil intermediate of the first and second output terminals connected to the reference terminal;
- wherein the transformer is adjustable such that the voltages provided at the first and second output terminals relative to the centre tap are adjustable;
- and
- an electron emission cathode;
- and an anode, wherein an output of the high-voltage generator is electrically connected to the electron emission cathode and the anode is electrically connectable to ground.
Dependencies are inferred from the claim text.