X-ray fluorescence analyzer and power supply device
AssigneeShimadzu Corporation
InventorYohei Ukai
Life of this patent
Estimating the term…
Abstract
An X-ray fluorescence analyzer is provided with an X-ray tube that irradiates primary X-rays, a first power supply that supplies a filament current, a second power supply that applies a tube voltage, a first diode connected to a power line, a Zener diode connected to the ground terminal, and an operational amplifier having an inverting input terminal, and a non-inverting input terminal. The non-inverting input terminal is connected to the power line, and the output terminal is connected to the second terminal and the inverting input terminal.
Claims7
An X-ray fluorescence analyzer comprising:
- an X-ray tube including a filament and a target, the X-ray tube being configured to irradiate a sample with primary X-rays;
- a detector configured to detect secondary X-rays generated from the sample;
- a first power supply configured to supply a filament current to the filament via a power line;
- a second power supply configured to apply a tube voltage to the target;
- a first diode having a first terminal and a second terminal, the first terminal being connected to the power line;
- a Zener diode having a third terminal and a fourth terminal, the third terminal being connected to the second terminal, the fourth terminal being connected to a ground terminal;
- and
- an operational amplifier having an output terminal, an inverting input terminal, and a non-inverting input terminal,
- wherein the non-inverting input terminal is connected to the power line, and
- wherein the output terminal is connected to the second terminal and the inverting input terminal.
A power supply device configured to supply a current to an X-ray tube including a filament and a target, comprising:
- a first power supply configured to supply a filament current to the filament via a power line;
- a second power supply configured to apply a tube voltage to the target;
- a first diode having a first terminal and a second terminal, the first terminal being connected to the power line;
- a Zener diode having a third terminal and a fourth terminal, the third terminal being connected to the second terminal, the fourth terminal being connected to a ground terminal;
- and
- an operational amplifier having an output terminal, an inverting input terminal, and a non-inverting input terminal,
- wherein the non-inverting input terminal is connected to the power line, and
- wherein the output terminal is connected to the second terminal and the inverting input terminal.
Dependencies are inferred from the claim text.