JPS5571200A - Field circuit of electromagnetic coupling - Google Patents

Field circuit of electromagnetic coupling

Info

Publication number
JPS5571200A
JPS5571200A JP14427078A JP14427078A JPS5571200A JP S5571200 A JPS5571200 A JP S5571200A JP 14427078 A JP14427078 A JP 14427078A JP 14427078 A JP14427078 A JP 14427078A JP S5571200 A JPS5571200 A JP S5571200A
Authority
JP
Japan
Prior art keywords
field
currents
parallel
resistance
electromagnetic coupling
Prior art date
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.)
Pending
Application number
JP14427078A
Other languages
Japanese (ja)
Inventor
Hirofumi Inoue
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14427078A priority Critical patent/JPS5571200A/en
Publication of JPS5571200A publication Critical patent/JPS5571200A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To produce this field circuit of an electromagnetic coupling with a narrow adjusting range, by mounting resistance that can be connected and disconnected in parallel with field winding.
CONSTITUTION: The output of a three-phase full-wave rectification circuit 6 is connected to the field winding 1 of an electromagnetic coupling through series resistance 3 while a series circuit of parallel resistance 2 and a switch 4, which is contacted and detached by means of a field current detector 5, is connected in parallel with the field winding 1. When continuously decreasing field currents, the making instructions of the switch 4 are emitted from the detector 5 when the field currents reach not more than some value, and the parallel resistance 2 is closed. The three-phase full-wave rectifier 6 works so as to raise the field currents in order to let the same currents flow to the field winding 1. A range that the output of the three-phase full-wave rectifier 6 is adjusted can be controlled in small one because field voltage in a region that the field currents are little can be increased by the connection of the parallel resistance 2.
COPYRIGHT: (C)1980,JPO&Japio
JP14427078A 1978-11-24 1978-11-24 Field circuit of electromagnetic coupling Pending JPS5571200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14427078A JPS5571200A (en) 1978-11-24 1978-11-24 Field circuit of electromagnetic coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14427078A JPS5571200A (en) 1978-11-24 1978-11-24 Field circuit of electromagnetic coupling

Publications (1)

Publication Number Publication Date
JPS5571200A true JPS5571200A (en) 1980-05-29

Family

ID=15358178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14427078A Pending JPS5571200A (en) 1978-11-24 1978-11-24 Field circuit of electromagnetic coupling

Country Status (1)

Country Link
JP (1) JPS5571200A (en)

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