Electronic ballast circuit with function of correcting power factor and load current amplitude factor
An electronic ballast, load current technology, applied in electric light sources, electrical components, lighting devices, etc., can solve problems such as increasing circuit complexity, and achieve the effect of good power factor
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[0025] see figure 2 , is the circuit block diagram of the electronic ballast circuit with power factor and load current crest factor correction function according to the first preferred embodiment of the present invention. Such as figure 2 As shown, an electronic ballast circuit with power factor and load current crest factor correction function is electrically connected to an input power supply, which provides an input voltage V in , the electronic ballast circuit includes: a rectifier 5, a power converter 6 and a valley fill circuit (valley fill circuit) 8. The rectifier 5, which is electrically connected to the input voltage V in , the input voltage V in rectified to provide a first voltage V 1 . The power converter 6 is electrically connected to the rectifier 5, and the first voltage V 1 Do high-frequency switching output to provide electric energy for a load 7 . And, the valley-filling circuit 8 is electrically connected to an output end of the power converter 6 an...
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