X-Ray Source Driving Circuit With Common-Potential Insulation Layout
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Solution Overview
Problem
Existing X-ray generation devices using electric field emission sources face a high risk of dielectric breakdown due to large insulation distances between high voltage circuits, hindering the reduction of device size and weight.
Innovation Solution
An X-ray generation device with a first and second voltage converter system, utilizing transformers and voltage multipliers, where one secondary side electrode of the second transformer is connected to the cathode electrode in common, forming a single circuit with a common potential, thereby reducing insulation distances and minimizing dielectric breakdown risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulation distance is increased or high voltage shielding structure is added to increase insulation stability, then dielectric breakdown risk is reduced, but device size and weight increase
Solution Approach 1:
The patent connects one secondary side electrode of the second transformer to the cathode electrode in common, establishing a common potential reference point. This equipotential connection eliminates potential differences that would require additional insulation distance, allowing high voltage circuits to be placed closer together without increasing dielectric breakdown risk, thereby reducing device size and weight while maintaining insulation stability
2Reliability
If insulation distance is increased or high voltage shielding structure is added to increase insulation stability, then dielectric breakdown risk is reduced, but device complexity increases
Solution Approach 1:
The patent merges the secondary side electrode of the second transformer with the cathode electrode to form a common potential reference. This merging eliminates the need for separate insulation structures and shielding components between these elements, reducing device complexity while maintaining reliable insulation through the shared potential reference
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces insulation distances between high voltage circuits, lowering the risk of dielectric breakdown and enabling a more compact X-ray generation device design.
Implementation Method 1
a transformer for boosting the AC voltage to an appropriate level
Implementation Method 2
at least one voltage multiplier for multiplying a first voltage output from the first transformer
Implementation Method 3
the electric field emission X-ray source uses the cold cathode emitter for emitting quantum mechanically tunneled anisotropic cold electrons at room temperature
Data Source
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AI summary
An X-ray source driving circuit and an X-ray generation device using the same are proposed. An objective of the present disclosure is to provide an X-ray source driving circuit having a low possibility of dielectric breakdown and capable of reducing an insulation distance between high voltage circuits, and to provide an X-ray generation device of which the size and weight may be reduced by using the same. In order to achieve the above objective, the X-ray generation device includes an X-ray source including a cathode electrode, an anode electrode, and a gate electrode and configured to generate X-rays with a driving voltage applied to each electrode, a first voltage converter including a first transformer and at least one voltage multiplier for multiplying a first voltage output from the first transformer, and a second voltage converter including a second transformer and a voltage multiplier for multiplying a second voltage output from the second transformer, wherein the at least one voltage multiplier of the first voltage converter generates a cathode voltage and an anode voltage, which have a potential difference between each other from the first voltage, the voltage multiplier of the second voltage converter generates a gate voltage from the second voltage, and substantially insulates a primary side and secondary side of the second transformer by connecting one of secondary side electrodes of the second transformer to the cathode electrode in common, and the at least one voltage multiplier connected to a secondary side of the first transformer and the voltage multiplier connected to the second transformer form a substantial single circuit having the cathode voltage as a common potential.