| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-voltage power circuit with a simple structure capable of reducing total power consumption and increasing the service life of an ozone-absorbing filter by reducing power consumption and ozone generation when an internal temperature of an electronic apparatus at a low temperature. SOLUTION: This high-voltage power circuit 1 is equipped with a high-voltage transformer 4 for increasing input voltage. A high-pressure power output increased by the high-voltage transformer 4 is supplied as a drive power supply for an ion air generator. Between the low-voltage side of a secondary coil 3 of the high-voltage transformer 4 and the ground, there is provided a resistor element 23 for current detection to detect the voltage across the resistor element 23 for current detection and control an output current so as to be constant. The resistor element 23 for current detection is a resistor element having a negative temperature characteristic such as a thermistor, and the high-voltage power circuit 1 performs current control so as to increase an output current when the ambient temperature of the resistor element 23 for current detection is high, and so as to decrease the output current when it is low. COPYRIGHT: (C)2005,JPO&NCIPI
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