| 摘要 |
A circuit for periodically reversing the polarity of a direct current potential supply line. An inductor element is connected in series between the positive polarity output terminal of a direct current potential source and the supply line and the anode-cathode electrodes of a silicon controlled rectifier are connected across the series combination of a capacitor which is charged to a predetermined potential magnitude of a polarity in series aiding relationship with the direct current potential source, the inductor element and the direct current potential source. When the capacitor has been charged to the predetermined potential magnitude, the silicon controlled rectifier is triggered conductive through the anode-cathode electrodes to complete a discharge circuit for the capacitor through the direct current potential source and the inductor element. The potential drop across the inductor element produced by the capacitor discharge current reverses the polarity of the supply line with respect to the negative polarity terminal of the direct current potential source.
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