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Device for the purposes of the regulation of the current-voltage characteristic of an alternating current - or rotary current apparatuses, particularly for the stabilization of the current and the reduction in the no-load voltage of perspiration transformers
Device for the purposes of the regulation of the current-voltage characteristic of an alternating current - or rotary current apparatuses, particularly for the stabilization of the current and the reduction in the no-load voltage of perspiration transformers