| 摘要 |
A wire-cut, electric-discharge machining power source which is provided with a first low-current discharge circuit and a second high-current discharge circuit. The first low-current discharge circuit makes a wire electrode positive and a workpiece negative, and the second high-current discharge circuit makes the wire electrode negative and the work positive. After triggering a discharge by the first low-current discharge circuit, a main discharge for machining is produced by the second high-current discharge circuit.
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