公开(公告)号：US20240192717A1

公开(公告)日：2024-06-13

申请号：US18556200

申请日：2022-04-29

Applicant: DH Technologies Development Pte. Ltd.

Inventor： Martian D. DIMA ,  Graham Arthur LEITH

IPC: G05F3/16 ,  H01J49/02 ,  H01J49/40

CPC classification number: G05F3/16 ,  H01J49/022 ,  H01J49/40

Abstract: In some disclosed example embodiments, an apparatus, such as an ion detector or ion optics in a mass spectrometer, includes a power supply having two terminals and configured to provide a voltage of a first value between the two terminals, and a voltage regulator connected between the two terminals of the power supply. The voltage regulator includes a varistor, such as a metal-oxide varistor (MOV), and a current limiting circuit, such as a resistance device, connected in series with the varistor. The current limiting circuit is configured to bias the varistor to operate continuously in a breakdown mode. The apparatus can further include electrodes, such as those configured to influence flight of charged particles, with at least one of the electrodes connected to one end of the varistor, and at least another one of the electrodes connected to the other end of the varistor.