Planar inductors
US4494100A · kind A · utility
212Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1982 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Jul 12, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A planar inductance element includes a generally flat substrate of electrically insulating material. First and second substantially flat spiral coils, having respective inner and outer ends, are disposed on opposite sides of the substrate. The coils are spiraled in the same direction as viewed from one side of the substrate with one coil spiraling out and one spiraling in. The inner ends of the coils are joined through the substrate to couple the coils in series. The outer ends of the coils provide terminals for the inductor. The means/methods are disclosed for discretely and progressively trimming the inductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.