X-ray Generator Grounded Anode Stability Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The field electron emission type X-ray generator with a grounded anode electrode faces challenges in stable operation due to the need for generating and managing negative high voltages, which complicates insulation and stability considerations.
Innovation Solution
A system combining a thermal electron emission type X-ray generator to produce a negative high voltage and filament current, used to bias the cathode electrode and control the emission current in a field electron emission type X-ray generator, with a field emission current control unit converting the filament current into output voltages for the gate and cathode electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the anode electrode is grounded to effectively remove heat and enable external target exposure, then heat dissipation and target accessibility are improved, but generating and managing negative high voltages complicates insulation and stability
Solution Approach 1:
The patent introduces a field emission current control unit as an intermediary device that generates the required negative high voltages and gate voltages based on a simple control signal. This mediator handles the complex voltage generation and insulation management, allowing the anode to be grounded for effective heat dissipation while maintaining system stability through controlled voltage application to the cathode and gate electrodes.
2Extent of automation
If field electron emission type X-ray generator is used for digital control, then digital control capability is improved, but stable operation becomes difficult due to negative high voltage requirements
Solution Approach 1:
The field emission current control unit operates autonomously to generate the necessary negative high voltages and gate voltages in response to a simple control signal. This self-service mechanism enables digital control capability while maintaining stable operation, as the control unit automatically manages the complex voltage requirements without manual intervention or additional stability-complicating components.
3Ease of operation
If negative high voltage and gate voltage are generated to drive field electron emission type X-ray generator with grounded anode, then proper electron emission is achieved, but device complexity increases
Solution Approach 1:
The field emission current control unit performs multiple functions: it generates the negative high voltage for cathode biasing, generates the gate voltage for electron emission control, and provides current stabilization. By consolidating these multiple voltage generation and control functions into a single multi-functional unit, the patent achieves proper electron emission while reducing overall device complexity compared to having separate systems for each function.
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
This approach allows for stable and efficient driving of the field electron emission type X-ray generator with an anode electrode grounded, ensuring effective insulation and stability by controlling the emission current and gate-source voltage.
Implementation Method 1
a thermal electron emission type X-ray generator configured to generate a negative high voltage and a filament current
Implementation Method 2
a field electron emission type X-ray generator emits an electron by applying a high voltage to a metal tip or a carbon nano tube
Data Source
AI summary
Provided is an X-ray generator including a thermal electron emission type X-ray generator configured to generate a negative high voltage and a filament current, a field electron emission type X-ray generator including an anode electrode to be grounded, and configured to use the negative high voltage to bias the cathode electrode, and a field emission current control unit configured to convert the filament current to generate an output voltage to be provided to a gate electrode of the field electron emission type X-ray generator and convert the filament current to fix, to a specific level, a level of an emission current flowing through the cathode electrode.