Basic Circuits of Switching Power AC Input and Commuted Filter

Published:2011/6/6 23:29:00 Author:Michel | Keyword: Switching Power, AC Input, Commuted Filter, Basic Circuits | From:SeekIC

①Lightning protection circuitThe circuit composed of MOV1,MOV2,MOV3(F1、F2、F3、FDG1 ) protects the whole circuit when there is lightning and produced voltage leads in the power supply via power system.When the two terminals' voltgae of RPS is more than its work voltage ,its resistance magnitude drops to make high voltage energy consume on RPS.F1,F2,F3 will be burnt to protect next circuit if the current is excessive.②Input filter circuitDouble π type filtering network composed of C1,L1,C2 and C3 mainly prevents electromagnetic noises of input source and clutter signals to avoid the power supply being obstructed.Meanwhile,it also prevents that high frequency clutter generated by the power supply itself disturbs electrified wire netting.



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