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A new topology has emerged out of the research to provide four quadrant operation of a high frequency dc-dc converter having one supply source and easy gate pulse control. This new topology has been developed out of switching dc-dc converters with voltage lift circuits; its operational range is wide at high conversion efficiency, whereas, the present four quadrant switching dc-dc converters conversion efficiency decreases around the operation of a particular duty cycle. The result is a single source topology switched by conventional ON/OFF duty cycle control as used in other high power...

ANALYSIS on DIGITAL ELECTRONIC DISPLAY SYSTEM. People are using most effectively Digital Electronic Display Systems for highlighting their product innovations in markets, trade shows, exhibitions, seminars etc and now-a-days it is being randomly used in a large Bill boards to show down the world class ceremonies like Olympic game, World cup Cricket, World cup football in the different venues of the world. Display systems use a wide range of modalities categorized mainly into direct view & projection system.These devices can also be classified as Light-Emitting and Non-Light-Emitting...