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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP50108890ApriorityCriticalpatent/JPS5233028A/en
Publication of JPS5233028ApublicationCriticalpatent/JPS5233028A/en
PURPOSE: The small size AC transformer suited for the control of the induction motor. A pair of secondary winding, one for detecting the current quantity and one for detecting the zero current, are wound to a single iron core.