Light emitting control circuit of knob
US11317485B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 30, 2021 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Apr 30, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V23/0442
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The utility model discloses a light emitting control circuit of a knob, which includes a first Hall switch, a moving magnet that controls the on-off of the first Hall switch, and a second Hall switch, wherein the moving magnet can move above the circumference where the first Hall switch is located, the first Hall switch is connected to a first light emitting group, an output of the first Hall switch is connected to a second light emitting group through a control switch, the second Hall switch is connected to a third light emitting group, and changes of colors such as two and three colors are achieved by changing the position of the moving magnet between the first Hall switch and the second Hall switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.