The pursuit and analyses for optimum chopper

Some novel chopper circuits are presented and discussed. In general, the usual chopper circuits are constructed in a simple and compact way. Since the early years, such fundamental constructions have been usually used with new switching devices invented in succession, because of no room to improve such simple ones. In former times, an idea of some original choppers proposed by one of the authors, which have novel concepts. In this paper, the circuit analyses and their further developments are presented and discussed for original ones.