| 摘要 |
<p>This power supply circuit is provided with: a power factor correction circuit (PFC circuit (130)); a bypass circuit (RY1) for bypassing the power factor correction circuit (130); and a control unit (microcomputer (120)) that performs switching, on the basis of a load state, between a first control state wherein the power factor correction circuit (130) is operated, and the bypass circuit (RY1) is controlled to be in a cut-off state, and a second control state wherein the power factor correction circuit (130) is stopped, and the power factor correction circuit (130) is bypassed by means of the bypass circuit (RY1). Preferably, the control unit selects the first control state in a first load state, and the control unit selects the second control state in a second load state wherein the load is lighter than that in the first load state. Consequently, the power supply circuit having improved efficiency when the load is light, and an air conditioning apparatus provided with the power supply circuit can be provided.</p> |
