| 摘要 |
PURPOSE:To provide a power supply system in which the distortion of an input current of a power supply, comprising an inverter section fed with a DC voltage obtained by rectifying and smoothing the voltage of an AC power supply, can be improved through a simple circuit for simply applying a high frequency voltage of another power supply to a power supply input section while superposing. CONSTITUTION:The power supply system comprises a first power supply unit 31 for converting the voltage of an AC power supply AC1 through a rectifier circuit section DB1 into a DC ripple voltage which is converted through a power supply section 11 into a high frequency voltage fed to a load 41, and a second power supply 32 for converting the voltage of an AC power supply AC2 through a rectifier circuit section DB2 into a DC ripple voltage which is converted through a power supply section 12 into a high frequency voltage applied to a load 42. The high frequency voltage from the power supply section 11 is applied to a high frequency superposing section 2 disposed in front or rear of the rectifier circuit section DB2 of the second power supply unit 32 thus improving distortion of the input current of the second power supply unit 32. |
