Magnetic Core Transformer Layout for Compact RF Voltage Boosting
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Solution Overview
Problem
Existing power supplies for mass spectrometers face challenges in reducing size while maintaining a transformer factor, which is essential for efficient RF and DC voltage amplification, and in minimizing inductive coupling to match low-voltage RF power sources.
Innovation Solution
A power supply design incorporating a magnetic core transformer with a unique configuration of input and output coils, where the inner and outer windings form a single turn winding, and the use of DC and RF decoupling capacitors to optimize transformer performance, allowing for reduced size while maintaining high voltage resilience and efficient frequency matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If an air core transformer is used, then the transformer size can be reduced, but the transformer factor and voltage amplification capability deteriorate
Solution Approach 1:
The patent implements a nested winding structure where an inner winding is placed inside an outer winding, both centered around a magnetic core. This nested configuration allows the windings to occupy overlapping spatial regions, effectively reducing the overall transformer volume while maintaining sufficient turns ratio for voltage amplification. The inner and outer windings are connected in series to achieve the required transformation ratio without increasing the physical footprint.
Solution Approach 2:
The patent employs a composite magnetic core structure combining ferrite and air gaps in a periodic arrangement. This composite configuration optimizes the magnetic properties by combining the high permeability of ferrite with the nonlinear characteristics of air gaps, enabling efficient voltage amplification in a compact form factor suitable for RF power source applications.
2Volume of moving object
If the transformer size is reduced, then the device becomes more compact, but the inductive coupling increases
Solution Approach 1:
The patent applies local quality by creating regions with different magnetic properties within the transformer structure. The periodic arrangement of ferrite segments and air gaps creates localized magnetic pathways that guide flux through specific regions, thereby controlling inductive coupling in compact dimensions. This spatial variation in magnetic properties allows size reduction while managing harmful inductive effects.
3Power
If a magnetic core transformer is used, then the transformer factor is improved, but the device complexity increases
Solution Approach 1:
The magnetic core is segmented into periodic ferrite and air gap regions, creating a modular structure that simplifies manufacturing while achieving the desired magnetic properties. This segmentation allows the complex magnetic characteristics to be built from simple repeating units, reducing overall device complexity despite the enhanced transformer factor.
Solution Approach 2:
The patent merges the functions of multiple windings into a single integrated structure where inner and outer windings are combined in a nested configuration. This merging reduces the number of separate components and simplifies the overall transformer structure while maintaining the required transformation ratio and magnetic coupling.
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 enables a compact power supply that effectively amplifies RF and DC voltages, ensuring efficient operation of mass spectrometers by maintaining a high transformer factor and reducing inductive coupling, thus enhancing the separation of ions based on mass.
Implementation Method 1
a magnetic core transformer including a first transformer and a second transformer, each of which boosts an output of the RF power source
Implementation Method 2
DC decoupling capacitors connected between a ground and a first terminal among output terminals of the first transformer and the second transformer
Data Source
AI summary
A power supply includes an RF power source, a magnetic core transformer including a first transformer and a second transformer, each of which boosts an output of the RF power source. Each of the first transformer and the second transformer includes an input coil, a magnetic core, and an output coil. The input coil includes an outer winding and inner winding. The outer winding and inner winding form a single turn winding, and the outer winding and the inner winding are connected in series to each other.