Adjustable high-voltage pulse generator applied to mass spectrometer

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...

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

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