High-voltage measuring unit with self-correction
US10901004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2017 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Mar 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present application relates to a method for providing a corrected measuring signal indicating a high voltage on a high-voltage node (HV), including: injecting a periodic injection signal into a voltage divider coupled between the high-voltage node (HV) and a reference potential; obtaining a sensing signal at a sensing node (S) of the voltage divider, wherein the sensing signal depends on the periodic injection signal; from the sensing signal, separating a first sensing signal portion resulting from the high voltage and a second sensing signal portion resulting from the periodic injection signal; and depending on the second sensing signal portion, correcting the first sensing signal portion corresponding to the high-voltage signal in order to obtain the corrected measuring signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.