High-reliability magnetic deflection mass spectrograph multiplexed output high-voltage power supply circuit

Abstract

The invention discloses a magnetic deflection mass spectrograph multiplexed output high-voltage power supply circuit which comprises an input filtering circuit, a primary voltage stabilization converting circuit with a multiplexed output voltage total power overcurrent protection function, a synchronization fixed duty ratio concentration driving circuit and a secondary isolation high-voltage power converting circuit. According to the circuit, multiplexed output and overcurrent protection of a magnetic deflection mass spectrograph high-voltage power supply are achieved, the advantages of high reliability, miniaturization and light weight are achieved, and the circuit is especially suitable for space application.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a circuit for a high-reliability magnetic deflection mass spectrometer with multiple outputs of high-voltage power supplies. Background technique [0002] The high-voltage power supply is an important part of the magnetic deflection mass spectrometer. The physical part of the magnetic deflection mass spectrometer requires 2500V positive high voltage, 1250V focusing pole high voltage, -2000V multiplier high voltage, 2V filament voltage, +48V collector voltage, +6V Seven outputs of repeller voltage and -72V bias voltage; low-voltage outputs such as filament power supply, collector voltage, repeller, and bias voltage are all floating on the positive high-voltage output, requiring high-voltage output and low-voltage operation The external mass spectrometer central computer is completely isolated to ensure the safety of low-voltage equipment such as the external mass spectrometer cent...

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Problems solved by technology

[0003] The high-voltage power supply of the magnetic deflection mass spectrometer independently designed with seven outputs is inconvenient to install, large in size, heavy in weight, and the power consumption of the high-voltage power supply is large, and the safety of the high-voltage power supply output to the external magnetic deflection mass spectrometer central computer cannot be guaranteed; It cannot meet the requirements of high reliability, miniaturization and light weight of magnetic deflection mass spectrometer for portable gas composition detection and space environment detection

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