Patent ID: 9437409
Filing Date: 2016-09-06
CPC Classification: G05F,H01J,H03H

Claim Text:
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.