Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NipponDenso Co LtdfiledCriticalNipponDenso Co Ltd
Priority to JP13332376ApriorityCriticalpatent/JPS5358618A/en
Publication of JPS5358618ApublicationCriticalpatent/JPS5358618A/en
PURPOSE: To cut off a current of the commutation circuit by opening a contact of the electromagnetic switch for the main circuit as well as to turn on the main thyristor of the chopper by detecting a no control status of the thyristor chopper.