| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a storage power discharging circuit that causes power not to be stored among terminals of main circuit capacitors when power supply is not supplied after the power supply is shutdown while imparting structures among the terminals of the main circuit capacitors with high-resistance after power supply activation and reducing power consumption. <P>SOLUTION: A storage power discharging circuit of an inverter device comprises: main circuit capacitors that are connected among main terminals and are stored with electrical charges from the time when power supply is activated; and a discharge control circuit provided with a control switch that turns OFF a secondary side when a current is supplied to a primary side and turns ON the secondary side when the current is not supplied to the primary side and a discharging resistor connected to the secondary side of the control switch. By supplying the power supply to the primary side of the control switch after power supply activation, the discharge control circuit turns OFF the secondary side of the control switch and opens circuits among the main terminals of the main circuit capacitors. Further, when the power supply is shutdown, the discharge control circuit turns ON the secondary side of the control switch, discharges the secondary side by the discharging resistor and holds connections of a linear circuit that includes at least an ON resistor of the control switch and the discharging resistor among the main terminals of the main circuit capacitors. <P>COPYRIGHT: (C)2013,JPO&INPIT |
