Electron Gun Single Power Supply Control Circuit

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Solution Overview

Problem

Existing electron guns require separate power supplies for the electrode and control element, making them complex and difficult to control for various applications, while also lacking efficient mechanisms for precise control of electron beam emission.

Innovation Solution

An electron gun design that uses a single power supply for both the electrode and control element, with a control circuit that includes variable resistors and photo-relays to adjust the electric field, allowing for simpler operation and precise control of electron beam emission through a control circuit connected to a controller and detector.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate power supplies are used for the electrode and control element, then the electron gun can provide independent control of each component, but the device complexity increases

Engineering Contradiction:
Improveindependent control capabilityVSAvoidpower supply configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines two separate power supplies into a single shared power supply that serves both the electrode and control element. The power supply includes a control circuit with switching elements that can independently regulate voltage to each component, achieving both simplification and independent control capability.

Inventive Principle:
Principle #5Merging (Combining)

2Device complexity

If a single power supply is used for both electrode and control element, then the device complexity is reduced, but the control precision over electron beam emission may be compromised

Engineering Contradiction:
Improvepower supply configurationVSAvoidelectron beam emission control
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The control circuit is segmented into separate control paths for the electrode and control element, with independent switching elements and regulation mechanisms. This allows the single power supply to deliver precisely controlled, independently adjustable voltage to each component, maintaining control precision despite the consolidation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The control circuit incorporates dynamic switching elements that can rapidly adjust voltage distribution between the electrode and control element based on operational requirements. This dynamic control capability ensures precise electron beam emission control while using a single power supply.

Inventive Principle:
Principle #15Dynamics

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 design simplifies the electron gun while enabling effective control of electron beam emission for different applications by adjusting the electric field, improving precision and versatility.

Implementation Method 1

The control element is arranged to be electrically connected with the power supply to provide an electric field to control emission of electron beams from the electron emission element

Methodology Applied
Scientific EffectElectric field: Electric Field

Implementation Method 2

The electrode is arranged to be electrically connected with a power supply to accelerate the emitted electron beam

Methodology Applied
Scientific EffectElectric field acceleration: Electric Field

Implementation Method 3

The electron emission element is arranged to be activated to emit electron beam

Methodology Applied
Scientific EffectElectron emission: Thermionic Emission

Data Source

PatentUS10916399B1Electron gun and apparatus incorporating the same
Publication Date: 2021.02.09 CITY UNIVERSITY OF HONG KONG
  • US10916399B1 patent drawing
  • US10916399B1 patent drawing
  • US10916399B1 patent drawing

AI summary

An electron gun and an apparatus incorporating the electron gun. The electron gun includes an electron emission element, an electrode, a control element, and a control circuit. The electron emission element is arranged to be activated to emit electron beam. The electrode is arranged to be electrically connected with a power supply to accelerate the emitted electron beam. The control element may be arranged between the electron emission element and the electrode. The control element is arranged to be electrically connected with the power supply to provide an electric field to control emission of electron beams from the electron emission element. The control circuit is electrically connected with the control element for changing the electric field provided by the control element.