Compensating circuit having programmable capacitance array for measuring AC voltage
US8890548B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Dec 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/2506
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A compensating circuit which has a programmable capacitance array for measuring AC voltage is disclosed in the present invention. The compensating circuit includes a pair of first leads for linking to an AC circuit; a variable capacitor, electrically linked to the first leads, for providing different capacitance value according to a programmable capacitance array; and a control unit, electrically linked to the first leads, for changing the capacitance value of the variable capacitor as one capacitance of the programmable capacitance array according to an external instruction. Since the capacitance of the compensating circuit is changeable, and AC voltage meter designed with the compensating circuit is able to measure voltage in wider range of frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.