| 摘要 |
The purpose of the present invention is to stably supply current while making uniform the heat generated in a high-frequency power supply device without performing a determination operation. A drive control device 2 for a power supply device 1 for outputting alternating current by using a circuit in which switching arms 11, 12, 13, 14 are bridge-connected is provided with: a setting unit 4 for setting an operation condition according to a processing condition; and an oscillator 3 for outputting an on/off command. The switching arms 11, 12, 13, 14 are driven in a first mode in which all switching elements in a switching arm to be driven are simultaneously turned on and off, or a second mode in which all switching elements in a switching arm to be driven are not simultaneously turned on and off. The numbers of times of turning on all the switching elements are equalized in each of the first and second modes, and when driven in one of the first and second modes, the switching arm is also driven in the other of the modes. |
