| 摘要 |
PURPOSE:To eliminate noise by furnishing the first and the second switching element connected in seris, the first and the second diode connected in reversed parallel with the switching elements with the same direction, and the first and the second reactor. CONSTITUTION:In the condition that a switching element 4 is off, a voltage in the direction as shown by an arrow is generated in the first reactor 3, and current flows through a diode 7 to a capacitor 9, which is charged in polarities as shown in the attached diagram, and a boosting to 280V is made when the supply voltage is 100V. In the condition that another switching element 5 is off, a voltage in the direction opposite the arrow is generated in the reactor 3, and a capacitor 8 is charged in the polarities as shown in the attached diagram. A switching element 11 is turned on for a certain period with a high frequency signal given from a control circuit 16, and electric charges in the capacitor 9 flows through the element 11, an output reactor 14, and a load 13, and the output is supplied to the load. If a switching element 12 is turned on with a certain frequency, the electric charges in the capacitor 8 flow to the reactor 14, and AC output is supplied to the load 13. |
