Capacitor charging current measurement method
US6043665A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1997 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Dec 4, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for accurately measuring the insulation resistance of a capacitor while reducing time taken for the measurement. To this end, a current calculation equation is first obtained based on an equivalent circuit of a capacitor; then, the calculation equation is modified or corrected based on the degree of coincidence between an actually measured current value m(t) and a calculated current value i(t), the former being within a charge-up region of a dielectric polarization component upon initial application of a voltage; next, the current value at a time point of chargeup termination is predicted or estimated by use of this modified calculation equation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.