| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power conversion device capable of reducing the number of components used. <P>SOLUTION: The power conversion device 200 includes: resistances 20, 21 for dividing a voltage of a DC power supply 10 at a neutral point; a first voltage divider 30 for dividing the voltage of the DC power supply 10; a second voltage divider 31 for dividing a voltage at the neutral point; an analog input terminal for entering each voltage divided at the first voltage divider 30 and the second voltage divider 31; a microcomputer 32 having an A/D converter for converting a voltage input through the analog input terminal into a digital signal and a digital output terminal to output the digital signal converted by the A/D converter; and an insulation type signal transmitter 40 for electrically insulating and transmitting the digital signal output from a digital output terminal of the microcomputer 32 to a control device 50 driven by a voltage lower than the voltage of the DC power 10. <P>COPYRIGHT: (C)2010,JPO&INPIT |
