Search Results - daocheng+huang

2 Results Sort By:
2-Stage LED Driver With Multi-Channel Constant Current CLL Resonant Converter
A 2-stage LED driver is proposed, which is composed by a Buck converter and a multi-channel constant current CLL resonant converter. The CLL resonant converter is unregulated and is always working at the optimal point to achieve the best efficiency. The current of one specific LED string is sensed for feedback control to tune the duty cycle of Buck...
Published: 8/12/2014   |   Inventor(s): Xuebing Chen, Daocheng Huang, Qiang Li, Fred Lee
Category(s): Electrical, Engineering
Transformer Shielding Technique for Common Mode Noise Reduction in Isolated Converters
This innovation presents a universal method to reduce the common mode noise in isolated converters by eliminating the noise path in the inter-winding capacitor of the transformer. It is suitable in both typical winding transformers and PCB winding transformers. This innovation also provides a method to reduce common mode noise using balance concept....
Published: 9/21/2012   |   Inventor(s): Yuchen Yang, Daocheng Huang, Qiang Li, Fred Lee
Category(s): Energy