| 摘要 |
In a device for supplying an electrical voltage from at least two printed circuit boards (2, 3) which are placed at a distance from one another in an electric field, the two printed circuit boards (2, 3) have, at least on their surfaces, substances which contain free electrons. In addition, the two printed circuit boards (2, 3) are placed completely inside the electric field and are held at a mutual distance from one another which is such that their space charge zones are at least in mutual contact. <IMAGE>
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