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A modular, isolated high-voltage switch for application in ion mobility spectrometry.

Martin Lippmann1, Moritz Hitzemann1, Jonas Winkelholz1

  • 1Leibniz University Hannover, Institute of Electrical Engineering and Measurement Technology, Department of Sensors and Measurement Technology, Appelstr. 9A, 30167 Hannover, Germany.

Hardwarex
|September 18, 2024
PubMed
Summary

Researchers developed a modular, isolated high-voltage switch for ion mobility spectrometry. This new component offers comparable performance to commercial options, aiding instrument development and expanding applications in trace gas analysis.

Keywords:
High-voltage switchIon gatingIon mobility spectrometryIsolated gate driver

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Area of Science:

  • Analytical Chemistry
  • Instrumentation Science

Background:

  • Ion mobility spectrometry (IMS) is a versatile trace gas analysis technique with applications expanding beyond security.
  • Development of new IMS instruments and applications requires accessible, fundamental electronic components.

Purpose of the Study:

  • To present a novel modular, isolated high-voltage switch for IMS and other applications.
  • To demonstrate the switch's suitability for critical IMS functions, such as ion gate injection pulsing.

Main Methods:

  • Design and construction of a modular, isolated high-voltage switch.
  • Characterization of the switch's voltage handling, offset capabilities, and switching speeds.
  • Integration of the switch into an IMS instrument for ion gate pulse generation.

Main Results:

  • The modular switch supports individual modules switching up to 3 kV with an offset voltage up to 7 kV.
  • Achieved rise and fall times are less than 25 ns, suitable for high-speed applications.
  • Performance in a push-pull configuration for ion gate injection was comparable to commercial switches.

Conclusions:

  • The developed modular, isolated high-voltage switch is a viable alternative to commercial components.
  • Its design facilitates customization for diverse IMS applications.
  • This component can support the advancement and wider adoption of ion mobility spectrometry.