MULTIOUTPUT SWITCHING POWER CIRCUIT, AND IMAGE FORMER

摘要

PROBLEM TO BE SOLVED: To materialize costdown by lightening the load of an active filter at start of a multioutput switching power source. SOLUTION: This multioutput switching power circuit 10 obtains output V01 -V03 from each of a plurality of DC/DC converters 3a-3c to which a switching pA commercial power source is divided and connected via an active filter 2, and this circuit is equipped with Zener diodes Vz1 and Vz2 which have different Zener voltage values and are connected between a line for a start signal S1 for allowing the started DC converter to start the action of the active filter 2 and residual DC converters 3b and 3c.