T8 Tube
Currently there are several trends are driving the LED lighting market. The first is the MR16 high-brightness LED efficiency continues to improve and a very high efficiency constant current LED driver power supply reliability continue to emerge , followed by global legislation to ban incandescent lighting ( due to its low efficiency ) and CFL energy-saving lamps and gradually fade out ( if broken then it will be out environmentally harmful mercury ) . These factors combine to make LED lighting is becoming a long-term trend. Of course, low system cost ( including the LED, thermal management systems and LED driver ) is always the consumer widespread use of LED general lighting impetus. T8 Tube
In fact , in many LED lighting products , the failure is a common phenomenon , most due to a power failure , rather than failure of the LED . At the design level , this means that OEM system thermal design must become an expert . LED with high efficiency, but they are better than incandescent or energy-saving lamps produce more heat conduction .
Since many LED lighting applications enclosed in a small space , it is difficult airy way to dissipate heat. Without careful thermal design , LED, and power driver circuit is very easy because of the high temperature degradation or permanently disabled .
Abstract: The paper presents a work in discontinuous conduction mode (DCM) single-stage dual- output flyback power factor correction (PFC) converter bright LED drive method . In order to avoid the intersection of the two output transformer effect