Integrated power capacitor and inductors/transformers utilizing insulated amorphous metal ribbon
US4922156A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Apr 8, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/25
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A discrete device in which a capacitive and inductive function has been integrated is comprised of at least two insulated amorphous ribbons which are spirally wound to form a cylindrical toroid. Each of the amorphous metal ribbons is insulated from each other ribbon by a dielectric layer and wound in a stacked configuration to provide the capacitive function. Two conductive windings are then wrapped around segments of the cylindrical toroid to provide inductive and/or transforming functions as desired. A magnetic circuit is formed through the windings by the amorphous metal ribbons. A dielectric insulating layer between the ribbons is offset from the longitudinal edge of the ribbon so that the longitudinal edge of each ribbon is exposed. One ribbon has its longitudinal edge exposed on one surface of the toroid while another ribbon has its longitudinal edge exposed on the opposing surface of the toroid. Electrical contacts are then laid across an intersecting line contacting the exposed edge of each ribbon at a plurality of points. As a result, the electrical series resistance of each ribbon within the device is minimized thereby rendering a device practical for use within a power c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.