| 摘要 |
PURPOSE:To readily compose an inverter of high resolution and less memory capacity by individually storing the combination state of ON-OFF of a switching element and the maintaining time in the first and second memory cells, and obtaining the output by the combination of them. CONSTITUTION:An inverter controller has a frequency setter 8 and a microprocessor 9 to output a continued PWM signal for driving an inverter. The microprocessor 9 has the first memory 10 for storing the ON-OFF combination state of a transistor (Tr), the second memory 11 for storing the initial value of the ON-OFF combination maintaining time of the Tr, the third memory 12 for storing the maintaining time of one period, a timer 14, and a controller 15 therein. Thus, the controller 15 reads out the maintaining time from the memory 11 to set it in the timer 14, then converts the ON-OFF combination state by the value of the memory 12 to obtain from the first memory 10, thereby obtaining an ON-OFF signal with the timer 14. |
