High voltage power supply filter for a mass spectrometer

摘要

Systems, devices, circuits, and methods are provided for an improved mass spectrometry detection system that comprises at least one component that operates at a high voltage. A number of high voltage filters or circuits are provided for reducing noise from high voltage power supplies that produce positive and negative voltages. In some embodiments, the filters can comprise one or more diodes. In some embodiments, the filters can comprise one or more transistors. In some embodiments, the filters can comprise one or more transistor pairs. A variety of embodiments of systems, devices, circuits, and methods in conjunction with the disclosures are provided.

主权项

1. A circuit for use with a high voltage power supply of a mass spectrometer system, comprising:
a high voltage input; a high voltage output; a low pass filter coupled between the high voltage input and the high voltage output and configured to prevent frequencies higher than a threshold frequency from passing to the high voltage output; and at least two transistors coupled between the high voltage input and the high voltage output, the at least two transistors being electrically coupled in parallel and each comprising an emitter follower transistor and wherein the at least two transistors are positioned downstream of the low pass filter and configured to filter noise from a voltage outputted by the high voltage input before the voltage arrives at the high voltage output; and wherein a collector lead of each of the at least two transistors is electrically connected to the high voltage input and a base lead of each of the at least two transistors is electrically connected to the low pass filter.