| 摘要 |
An arrangement for the electrolytic removal of metal from a metallic workpiece. An electrolyte in contact with the workpiece is held within a container to which negative potential is applied from a DC source. The workpiece has positive potential applied to it. The workpiece is connected in series with a reference circuit consisting of silicon diodes, and the anode-cathode path of a thyristor is connected in parallel with the series combination of the reference circuit, the workpiece, the electrolyte and the container therefor. Connected, furthermore, in parallel with the reference circuit, are the emitter-collector paths of a plurality of transistors with bases connected to the container at negative potential. The voltage drop across the reference circuit is made at least as large as the anode voltage required for switching the thyristor to the conducting state when the workpiece contacts the container maintained at negative potential. |
