| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plasma type gas treatment device which does not require a direct current power source and on-off semiconductor switch of high breakdown voltage and is capable of efficiently removing a harmful gas component. <P>SOLUTION: Two sets of closed circuits having a capacitor in common are formed of: the direct current power source for charging; the capacitor; a pulse transformer having an intermediate tap on the primary side; and the on-off semiconductor switches which are connected to the respective taps of the divided primary side coil of the transformer. An electric current is selectively controlled by the on-off semiconductor switches, a bipolar pulse voltage is generated on the secondary coil of the boosting pulse transformer, plasma is generated between opposite electrodes, the gas containing a harmful gas is allowed to pass between the electrodes and the harmful gas component is removed. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
