| 摘要 |
PURPOSE:To improve an output waveform, especially its leading waveform by arranging an earth electrode so as to be opposed to a part of a conductor line of each turn. CONSTITUTION:A conductor line 6 formed by applying space winding to a conductor in a form of single layer and the earthing electrode 1 opposed to the conductor line 6 via a dielectric 2 are provided. Then the said earthing electrode 1 is arranged so as to be opposed to a part of the conductor line 6 of each turn. For example, the earthing electrode 1 placed at the inner side of the conductor line 6 wound in flat is arranged while being biased to one side of the bobbin 3 in the broadwise direction W so that the unit conductor line 5 of each turn is not opposed to the grounding to the grounding electrode 1 at a part before and after a connection section &. Thus, a part of a nearly inductance L only is formed on the way of the conductor line, and the output waveform, especially the leading waveform is improved.
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