Protection circuit and LED driving circuit
US10278257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2017 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Mar 17, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protection circuit and an LED driving circuit are provided, which include a Zener diode, a potential dividing unit, a first switch unit, and a second switch unit. The cathode and anode of the Zener diode are connected to a first power source and an input terminal of the potential dividing unit, respectively. The control terminal, input terminal, and output terminal of the first switch unit are connected to an output terminal of the potential dividing unit, a second power source, and the control terminal of the second switch unit, respectively. The input terminal and output terminal of the second switch unit are connected to the second power source and a boost circuit, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.