Capacitance measuring apparatus for capacitor
US7825670B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 24, 2008 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Oct 31, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/2605
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring apparatus for measuring capacitance of a capacitor includes a microprocessor, a control circuit coupled to the capacitor, and an Analog-to-Digital (A/D) converting circuit. The control circuit receives a control signal from the microprocessor, and outputs an analog voltage signal of the capacitor, and the control circuit charges/discharges the capacitor according to the control signal. The A/D converting circuit receives the analog voltage signal from the control circuit, and outputs a digital voltage signal. The microprocessor receives the digital voltage signal from the A/D converting circuit, and calculates capacitance of the capacitor according to the digital voltage signal and charge/discharge time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.