Current controlled variable inductor
US4630013A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Jan 23, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F21/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inductor is configured so as to wind a control coil on one of winding portions of first and second cores and to wind a tuning coil on the other winding portion to insert the second core into a hollow portion provided inside the first core, thereafter accommodating the first and second cores thus assembled into a pot-shaped core, wherein both winding portions of the first and second cores are arranged in parallel with each other and the winding portion of the first core is arranged perpendicular to a bottom surface of the pot-shaped third core. The control coil and the tuning coil are arranged so that their magnetic paths overlap with each other at the winding portion of the second core, thereby to control a current flowing through the control coil when energized to vary effective permeability of the core on which the tuning coil is wound, thus producing changes in inductance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.