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Capacitor-based magnetic field device and test system using same

A magnetic field and capacitance technology, applied in the field of electromagnetism, can solve the disadvantages of further in-depth research on new spintronic devices and magnetic sensor chip materials, the lack of reliable and easy-to-obtain ultra-fast magnetic field acquisition devices, and the integrity and accuracy of experimental results. To achieve the effect of improving the electromagnetic testing ability, avoiding the limited energy storage of capacitors, and avoiding the fluctuation of discharge level

Pending Publication Date: 2021-02-23
BEIHANG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Since many scientific research institutions or university laboratories do not have reliable and easy-to-obtain ultrafast magnetic field acquisition devices, many electromagnetic experiments cannot be carried out smoothly.
On the one hand, the research group purchased expensive professional equipment, which squeezed the research and development funds. On the other hand, the magnetic field generation device obtained was difficult to generate a magnetic field with the desired characteristics, which greatly reduced the integrity and accuracy of the experimental results.
The lack of professional equipment is extremely unfavorable for further research in the field of microelectronics such as new spintronic devices and magnetic sensor chip materials

Method used

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  • Capacitor-based magnetic field device and test system using same
  • Capacitor-based magnetic field device and test system using same
  • Capacitor-based magnetic field device and test system using same

Examples

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Embodiment 1

[0026] Such as figure 1 As shown, a basic topology circuit diagram of a capacitor-based magnetic field device, including a high-voltage charging source module 1, a capacitor charging and discharging module 2, a waveform sorting and protection module 3, an electrical signal monitoring and matching module 4, and a current commutation module 5, The magnetic field generating module 6; the high-voltage charging source module 1, the capacitor charging and discharging module 2 and the magnetic field generating module 6 are the basic constituent modules, and the remaining modules are used as auxiliary modules to add necessary function expansion and protection measures to the device.

[0027] Such as figure 2 As shown, the high-voltage charging power supply module 1 includes: a high-voltage DC charging source 7 and a charging switch 8, the positive pole of the high-voltage DC charging source 7 is connected to one side contact of the charging switch 8, and the negative pole is grounded...

Embodiment 2

[0061] The following is attached image 3 The preferred embodiment 2 of the present invention is further expanded and described.

[0062] A capacitance-based ultrafast magnetic field device of the present invention has multiple realization forms, and is not limited to a combination of modules, and is not limited to the arrangement and combination of existing modules, and some modules are added or deleted on this basis. attached image 3 Another implementation form of the present invention is shown, which can also achieve similar functions.

[0063] Such as image 3 As shown, a schematic diagram of an extended topology circuit of a capacitor-based ultrafast magnetic field device also includes: a high-voltage charging source module 1, a capacitor charging and discharging module 2, a waveform sorting and protection module 3, an electrical signal monitoring and matching module 4, and a current switching module. To the module 5 and the magnetic field generation module 6.

[006...

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Abstract

The invention discloses a capacitor-based magnetic field device. The device comprises a high-voltage charging source module for charging a capacitor discharging module, a capacitor charging and discharging module triggered by a pulse signal generated by a pulse generating device after charging and controls the capacitor discharging process, a waveform conditioning and protecting module, an electric signal monitoring and matching module, a current reversing module, and a magnetic field generation module excited by pulses formed by capacitor discharge to generate corresponding magnetic field signals. The capacitor charging voltage amplitude and the trigger pulse width control the characteristics of the pulse signal so as to control the intensity and the duration of the magnetic field signal,the device can realize the controllable magnetic field signal with high intensity and good time domain characteristic, and the functions of device protection, signal monitoring, magnetic field direction change and the like are realized at the same time. The problem that a stable ultrahigh and ultrafast magnetic field is difficult to obtain in electromagnetism related experiments at present is solved, various types of magnetic field signals can be provided, and various magnetism and spintronics scientific research experiments are carried out.

Description

technical field [0001] The invention belongs to the technical field of electromagnetism, and more specifically relates to a capacitance-based magnetic field device and a testing system using the magnetic field device. Background technique [0002] At present, in the research of electromagnetism and spintronics, especially magnetodynamics, researchers have gradually broken away from the traditional stage of qualitative research based on magnetic field, and put forward the experimental capabilities of magnetic domain change and magnetic domain wall motion in the time domain. higher requirements. In the common electromagnetic tests, the magnetic test method is basically based on the change of the magnetic environment factors such as the dimension of the magnetic field and the strength of the magnetic field, and lacks sufficient experimental means in terms of time domain characteristics. There are many ways to obtain an ultrafast magnetic field. The mainstream application is re...

Claims

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Application Information

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IPC IPC(8): H01F7/20
CPCH01F7/20
Inventor 张学莹欧阳玉东赵巍胜王麟
Owner BEIHANG UNIV
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