Lighting apparatus with inductor current limiting for noise reduction
US9192016B1 · kind B1 · utility
6Cited by
4References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | May 22, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/3725
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting apparatus includes a lighting circuit (e.g., an LED lighting circuit) and a driver circuit having an output coupled to the lighting circuit and an input configured to be coupled to a power source, such as a phase cut dimmer, that provides a varying voltage waveform. The driver circuit includes an electromagnetic interference (EMI) suppression inductor configured to be coupled in series with the power source and a bypass circuit configured to divert current from the EMI filter inductor to limit a current in the EMI filter inductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.