Adjustable high-voltage pulse generator applied to mass spectrometer

A high-voltage pulse and generator technology, applied in the direction of pulse shaping, etc., can solve the problems of high cost, the inability of users to change the pulse delay according to the experimental situation, and cumbersome structure

Inactive Publication Date: 2016-09-21
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of high-voltage pulse generator is often complicated in structure, relatively expensive in cost, and difficult to maintain
In special demand environments, traditional high-voltage pulse generators usually cannot meet our experimental requirements, and users cannot change pulse delay, width and other parameters according to experimental conditions

Method used

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  • Adjustable high-voltage pulse generator applied to mass spectrometer
  • Adjustable high-voltage pulse generator applied to mass spectrometer
  • Adjustable high-voltage pulse generator applied to mass spectrometer

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention is further described:

[0024] like figure 1, an adjustable high-voltage pulse generator applied to a mass spectrometer, characterized in that it includes a trigger pulse circuit and two MOSFET high-voltage control circuits, the trigger pulse circuit includes an external trigger circuit 1, an isolation circuit 2, and a CPLD control circuit 3, each One-way MOSFET high-voltage control circuit includes two groups of MOSFET drive circuits 4 and its drive power supply 5, two-way MOSFET combination circuit 6, one-way positive high-voltage input circuit 7, one-way negative high-voltage input circuit 8, two-way MOSFET high-voltage output circuit 9, and attenuation output circuit 10; the output end of the external trigger circuit is connected with the input end of the isolation circuit, the output end of the isolation circuit is connected with the input end of the CPLD control circuit, and 3 groups of key swit...

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PUM

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Abstract

The invention discloses an adjustable high-voltage pulse generator applied to a mass spectrometer. The adjustable high-voltage pulse generator comprises a trigger pulse circuit, and two MOSFET high-voltage control circuits; the trigger pulse circuit comprises an external trigger circuit, an isolation circuit, and a CPLD control circuit, each MOSFET high-voltage control circuit comprises two groups of MOSFET drive circuits and drive power source thereof, two MOSFET combined circuits, one positive high-voltage input circuit, one negative high-voltage input circuit, two MOSEFT high-voltage output circuits, and an attenuation output circuit; each circuit is powered by a direct current power source. The high-voltage pulse generator disclosed by the invention is cheap in cost, reliable in performance, can be used for extracting ions and electrons in a pulse mode in the mass spectrometer, such as a flight time mass spectrometer system.

Description

technical field [0001] The invention belongs to the technical field of electronic instruments and specifically designs an adjustable high-voltage pulse generator applied to a mass spectrometer. technical background [0002] A mass spectrometer is a chemical analysis instrument used for precise determination of molecular mass and compound analysis. In various mass spectrometers, such as time-of-flight mass spectrometers, pulsed extraction of ions and electrons is often required. In these cases, a pulse generator applies a pulse voltage to metal plates and other components to extract electrons and ion pairs. The pulse generator can be triggered by the timing system or the synchronous output level of various pulse light sources. [0003] Due to the high-mass resolution and high stability required by the mass spectrometer, the high-voltage pulse power supply of the mass spectrometer is highly required. In order to realize mass spectrometry field and on-site testing, the deman...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/01
CPCH03K5/01
Inventor 黄伟苗守葵黄腾彭秀球洪雨
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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