Patent · US Active

LED driver circuit

US9900946B2 · kind B2 · utility

1Cited by

0References

20Claims

0Family size

Assignee

XIAMEN LEEDARSON LIGHTING CO., LTD · CN

Inventors

Minghao Wu · Xiamen, CN
Wenchang Huang · 红钢城街道, CN
Yanzeng Gao · Xiamen, CN

Key dates

Filing date	Aug 3, 2016
Grant date	Feb 20, 2018
Priority date	—
Expiry date	Aug 3, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An LED driver circuit includes a rectifying module, a control unit, and at least two LED light strings. The control unit includes a voltage input detection terminal and a switch assembly. The voltage input detection terminal is configured to detect the waveform of the voltage input. The switch assembly changes the way of connection between the LED light strings according to the waveform of the voltage input.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.