| 摘要 |
Disclosed is a switching power supply circuit having electric properties which vary depending on the variation of loads to be applied to the switching power supply circuit. A circuit (3a) comprises a reactor (L1), a diode (D11) and a switch element (S1). The reactor (L1) and the diode (D11) are connected to each other in series on a power line (LH1). The switch element (S1) is arranged between a point between the reactor (L1) and diode (D11) and a power line (LL). A circuit (3b) comprises a reactor (L2), a diode (D21) and a switch element (S2). The reactor (L2) and the diode (D21) are connected to each other in series on a power line (LH2). The switch element (S2) is arranged between a point between the reactor (L2) and diode (D21) and the power line (LL). The properties of any one of the reactor (L1,L2), the switch element (S1,S2) and the diode (D11,D21) are different from the properties of the other components. |
