| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a driving device capable of reducing the number of large-sized and high-powered resistors for dividing a high voltage. <P>SOLUTION: A driving device comprises: a first resistor for dividing an output voltage for performing voltage control of a step-up power factor improving circuit, and for dividing an input voltage of a bridge invertor circuit for performing position detection by a position detector of the bridge invertor circuit, one end of the first resistor being connected to a high voltage side. The other end of the first resistor on a low voltage side is connected to a second resistor for dividing the output voltage for performing the voltage control of the step-up power factor improving circuit, and a third resistor for dividing the input voltage of the bridge invertor circuit for performing the position detection by the position detector of the bridge invertor circuit. A ratio in resistance value of the second resistor to the third resistor is approximately 1/10. Accordingly, the number of large-sized and high powered resistors for dividing a high-voltage is reduced and a mounting area required for mounting the resistors is reduced, allowing the step-up power factor improving circuit and the bridge invertor circuit to be mounted on the same circuit board. <P>COPYRIGHT: (C)2012,JPO&INPIT |
