Process and device for measuring the initial permeability of ferrimagnetic materials over a wide frequency band
US4649495A · kind A · utility
5Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1984 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/1223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to the process, a toroidal sample of ferrimagnetic material to be analyzed is placed in a thermostatically-controlled enclosure fitted with temperature regulation and detection means. The toroidal sample is submitted to an electro-magnetic magnetizing field of given frequency and the flux induced in the sample is measured directly using a measuring loop, around the sample and which is connected to a vectorial voltmeter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.