Method and apparatus for testing the impedance of two electrically conducting members using two pairs of electrodes in which the spacing of the pairs is adjustable and the electrodes are independently axially slidable
US5115200A · kind A · utility
17Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1990 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Jul 26, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and apparatus are provided for checking the electric continuity of an electrically conducting material device, in which a current is injected between two points of said device and the resulting voltage between these points is measured. The invention is remarkable in that said current is an AC current and its pulsation is chosen sufficiently large so that the impedance between the two points, measured by the ratio of said voltage and of the current, may be considered as being equal to the product of the inductance of the path of the current between said points multiplied by said pulsation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.