首页>
外国专利>
A device for shaping by means of an alternating current in continuous direct current in the ac line in two parallel branches the primaerwicklungen of transformers, which are arranged in pairs by means of periodic short-circuiting of the currents a direction to pass only
A device for shaping by means of an alternating current in continuous direct current in the ac line in two parallel branches the primaerwicklungen of transformers, which are arranged in pairs by means of periodic short-circuiting of the currents a direction to pass only
