| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that in an inverter device in which pulse signals are smoothed by a capacitor to generate control signals and the control signal of S is input into an inverter circuit, a transistor is overheated and destructed by an increase in the heat generation amount of the transistor due to the operation state transition of the transistor used at the final stage of the inverter circuit from a saturation region to an active region when the control signals stored in the capacitor are continuously input into the inverter circuit in spite of reduction in the driving power supply voltage supplied to the inverter circuit in stopping the operation of the inverter circuit. <P>SOLUTION: When the operation of the inverter circuit is stopped, an electric charge of the capacitor is discharged before the voltage of the driving power source decreases to a predetermined voltage or less, and the operation of the inverter circuit is stopped by causing the voltage of the control signals to be zero. <P>COPYRIGHT: (C)2009,JPO&INPIT |
