Voltage sensor
US10401394B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | May 1, 2017 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | May 1, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/242
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A voltage sensor includes an oscillator that has a circular or roughly circular shape and is supported by a mechanical support member, a fixed electrode that has a predetermined gap between the oscillator and the fixed electrode, and a drive electrode that is placed at a position different from the fixed electrode across the oscillator, and to which an AC drive voltage is applied to make the oscillator oscillate. In the voltage sensor, an electrostatic attractive force acts on the oscillator by applying a voltage to the fixed electrode, and a resonance frequency of the oscillator changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.