| abstract |
A device for the preparation of a plasma for producing ozone and/or oxygen ions in the air following the principle of dielectrically impeded discharge is disclosed. The device comprises: a) a flat, electrically insulating support ( 1, 7 ), the material thereof having a dielectric constant ε r which is at least higher than 30 (that is, ε r >thirty); b) an electrode ( 4 ) is placed on one of the main surfaces of the support ( 1, 7 ), c) at least one electrically insulating layer ( 2, 8 ) made of a dielectric material is placed on the other side of the support ( 1,7 ); d) the dielectric constant of the support ( 1, 7 ) and that of the insulating layer ( 2, 8 ) are different, e) an electrode ( 3, 10 ) made of an electrically conductive material is mounted an the insulating layer ( 2, 8 ), said electrode covering only partially the insulating layer ( 2, 8 ) and a high voltage of an AC generator is applied to both electrodes ( 3, 4 ). |