Method and apparatus for converting capacitance to voltage
US6356085B1 · kind B1 · utility
66Cited by
6References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | May 9, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/434
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for converting capacitance in a capacitive sensor into a voltage signal. A capacitive sensor monitors a physical parameter. A capacitance of the sensor varies with the physical parameter. A voltage supply applies an alternating voltage to the capacitive sensor, which creates an output signal from the sensor. A modulator modulates the output signal, which produces a voltage signal that corresponds to the capacitance of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.