Patent ID: 11972938
Assignee: THERMO FISHER SCIENTIFIC (BREMEN) GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A voltage supply for a mass analyser comprising:
a voltage source;
a first voltage output configured to provide a first voltage to a first electrode of the mass analyser, the first electrode of the mass analyser having a first mass shift per volt perturbation;
a second voltage output configured to provide a second voltage to a second electrode of the mass analyser, the second electrode of the mass analyser having a second mass shift per volt perturbation,
wherein the second mass shift per volt perturbation opposes the first mass shift per volt perturbation; and
a voltage divider network connected to the voltage source, the first voltage output, and the second voltage output, the voltage divider network comprising:
a first resistor configured to define the first voltage, the first resistor having a first temperature coefficient; and
a second resistor configured to define the second voltage, the second resistor having a second temperature coefficient, wherein the second temperature coefficient is selected based on the first and second mass shift per volt perturbations and the first temperature coefficient such that a first mass shift associated with the first electrode is compensated by a second mass shift associated with the second electrode.