Power line interference filter mounted on a PC board
US4622526A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1984 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Sep 14, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/427
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power line filter for removing interference is provided which is formed on a printed circuit board which has an extended grounding area and to which are mounted parallel capacitors, a pair of line inductors and a parallel resistor. Each of the inductors is formed as multi-section coils wound on plastic bobbins and which can be machine wound and the two wound inductors are then mounted on rectangular cores of U-U or U-I-shape to form the line inductors. At least two of the capacitors are rectangular shaped and are mounted on opposite ends of the line inductors and the assembled filter is placed into a case and encapsulated through openings formed in the printed circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.