Switchable inductor for strong currents
US5412310A · kind A · utility
10Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | May 7, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0458
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Switchable inductors for strong currents are used especially in antenna tuning circuits. The value of the inductance between the terminals of the primary winding of an air-core static transformer is different depending on whether the secondary winding of the transformer is placed in an open circuit or in a short circuit by switching means formed by power semiconductor elements. Application in particular to antenna coupling circuits for VLF stations working by frequency hop transmission with highly selective antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.