Title:
DRIVING CIRCUIT COMPATIBLE WITH BALLAST AND LED DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/165625
Kind Code:
A1
Abstract:
A driving circuit compatible with a ballast and an LED device. When detecting that an inductive ballast is accessed, a constant current driving module (104) is controlled to drive an LED lamp (106); and when detected that an electronic ballast is accessed, the constant current driving module (104) is turned off and a current limiting module (103) is controlled to drive the LED lamp (106) so that the LED lamp (106) is prevented from burning out due to the voltage produced by start-up during the start-up stage of the electronic ballast. In addition, the driving effect of the LED lamp (106) being compatible with the ballast is achieved, and the problem in existing LED lamp driving technology of anLED lamp burning out at the start-up moment because of not being compatible with a ballast when the LED lamp replaces a fluorescent lamp may be solved.
Inventors:
FAN CHUANXI (CN)
Application Number:
PCT/CN2018/077758
Publication Date:
September 06, 2019
Filing Date:
March 01, 2018
Export Citation:
Assignee:
FOSHAN CHANGJING ELECTRONIC TECH CO LTD (CN)
International Classes:
H05B44/00
Domestic Patent References:
| WO2015185300A1 | 2015-12-10 |
Foreign References:
| CN104540265A | 2015-04-22 | |||
| CN101730347A | 2010-06-09 | |||
| CN106979467A | 2017-07-25 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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