Means for controlling a coil arrangement with electrically variable inductance
US7382598B2 · kind B2 · utility
1Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 2004 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Dec 18, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F29/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a special control for current-controlled inductors which allows inductance to be varied at a considerably faster rate than is the case in the prior art. The control presented in the invention can be employed for coil arrangements which carry at least one control winding and at least two working windings on a ferro or ferromagnetic core material. The accelerated change in inductance is achieved by means of a demagnetizing inverse voltage impulse which is generated by a special part of the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.