| 摘要 |
A packet steriliser for sterilising packaged articles (110, fig 1), comprises a working surface arranged for receiving a packaged article to be sterilised; a first electrode 52 and a second electrode 51. The first electrode and the second electrode extend behind a portion of the area of the working surface and the first electrode is disposed between the second electrode and the working surface and the first electrode comprises a plurality of gaps 22 arranged so that, in use, when a voltage difference is applied between the first electrode and the second electrode, the associated electric field 53 is able to extend through the gaps beyond the working surface and into a package of said packaged article to be sterilized. The first electrode and the second electrode comprise adjacent extended surfaces which lie substantially along the direction of the working surface that provides a capacitance related to the adjacent spatial extent of the first electrode and the second electrode. An inductance is provided, where the inductance is selected based on that spatial extent to modify the resonant frequency of the electrode arrangement. |
