| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number-of-turn ratio of the primary and secondary windings of a high voltage transformer not only to miniaturize the transformer but also to reduce the distribution capacity thereof and to enable a wide range of resonance operation. SOLUTION: An inductance means is connected across an inverter circuit and the primary winding of the high voltage transformer in series and resonance inductance is formed by the inductance of an inductance means and the leak inductance of the high voltage transformer, and resonance is performed at resonance frequency Fr by the resonance capacitance containing the stray capacity of the high voltage transformer and the resonance inductance, and, when the drive frequency of the inverter circuit is set to (f), a power supply device for dust collection is operated so that the resonance frequency Fr is within a range of 1.1-1.8f (1.1f<=Fr<=1.8f). |
