FIELD: electrical engineering.
SUBSTANCE: proposed device has contacts inserted in power circuit, arc-control chamber, parallel magnetic blowdown coil, independent power supply with parallel magnetic blowdown coil connected thereto, and Hall-effect current sensor controlling polarity of independent power supply. Novelty is that device is provided with memory device whose input is connected to mentioned current sensor and output, to independent power supply. This novelty aids in elimination of magnetic feedback effect between parallel magnetic blowdown coil and current sensor.
EFFECT: minimized size and power requirement.
1 cl, 1 dwg
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