Circuit for suppressing electromagnetic interference
US11437983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2019 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Aug 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for suppressing electromagnetic interference signal on power lines. The circuit includes a first sensing circuit, a first amplifier, and a first controlled signal source. The first sensing circuit is arranged to sense a first electromagnetic interference signal. The first amplifier is arranged to be powered by a power source. The first amplifier provides a first amplification factor and being operably connected with the first sensing circuit to amplify a signal sensed by the first sensing circuit. The first controlled signal source provides a second amplification factor and is operably connected with the first amplifier to regulate or further amplify the amplified signal to provide a first suppression signal that reduces the first electromagnetic interference signal. Multiple such circuits can be cascaded to form a mufti-stage electromagnetic interference suppression circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.