Title:
DIMMING CIRCUIT AND DIMMING SYSTEM SUITABLE FOR SCR DIMMER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2016/107566
Kind Code:
A1
Abstract:
The present disclosure provides a dimming circuit for SCR dimmer (silicon-controlled rectifier) circuit. The dimming circuit includes a signal conversion circuit for converting an input signal to a sine-wave voltage signal and output the sine-wave voltage signal to a current sampling end of a power factor correction circuit. The dimming circuit also includes the power factor correction circuit to receive the sine-wave voltage signal for correcting power factor. A biasing current is generated according to the input signal and is positively correlated to the input signal, and a sine-wave current signal corresponding to the sine-wave voltage signal is a sum of the biasing current and a primary current of a transformer in the power factor correction circuit.
Inventors:
TIAN ZHIBIN (CN)
LOU JUNSHAN (CN)
SUN CHAOQUN (CN)
SHEN JINXIANG (CN)
LOU JUNSHAN (CN)
SUN CHAOQUN (CN)
SHEN JINXIANG (CN)
Application Number:
PCT/CN2015/099584
Publication Date:
July 07, 2016
Filing Date:
December 29, 2015
Export Citation:
Assignee:
SENGLED OPTOELECTRONICS CO LTD (CN)
International Classes:
H05B44/00; H05B37/02
Foreign References:
| CN104540292A | 2015-04-22 | |||
| US20110260634A1 | 2011-10-27 | |||
| CN101841242A | 2010-09-22 | |||
| CN201869417U | 2011-06-15 | |||
| US20140062322A1 | 2014-03-06 |
Other References:
See also references of EP 3241410A4
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (Bldg. A Winland International Center,No. 32 Xizhimen North Street, Haidian District, Beijing 2, CN)
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