ZA727672B - A device for controlling the excitation current of a coil producing a magnetic flux of reversible polarity - Google Patents

A device for controlling the excitation current of a coil producing a magnetic flux of reversible polarity

Info

Publication number
ZA727672B
ZA727672B ZA727672A ZA727672A ZA727672B ZA 727672 B ZA727672 B ZA 727672B ZA 727672 A ZA727672 A ZA 727672A ZA 727672 A ZA727672 A ZA 727672A ZA 727672 B ZA727672 B ZA 727672B
Authority
ZA
South Africa
Prior art keywords
controlling
magnetic flux
excitation current
reversible polarity
coil producing
Prior art date
Application number
ZA727672A
Other languages
English (en)
Inventor
E Danko
Original Assignee
Lenoir Raoul Ets
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 Lenoir Raoul Ets filed Critical Lenoir Raoul Ets
Publication of ZA727672B publication Critical patent/ZA727672B/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1872—Bistable or bidirectional current devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/087—Electrical assemblies or electrical control devices for electrically actuated grabs

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Synchronous Machinery (AREA)
  • Ac-Ac Conversion (AREA)
  • Control Of Electrical Variables (AREA)
  • Magnetic Treatment Devices (AREA)
ZA727672A 1971-11-19 1972-10-27 A device for controlling the excitation current of a coil producing a magnetic flux of reversible polarity ZA727672B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7141419A FR2161262A5 (xx) 1971-11-19 1971-11-19

Publications (1)

Publication Number Publication Date
ZA727672B true ZA727672B (en) 1974-06-26

Family

ID=9086026

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA727672A ZA727672B (en) 1971-11-19 1972-10-27 A device for controlling the excitation current of a coil producing a magnetic flux of reversible polarity

Country Status (13)

Country Link
AU (1) AU4846672A (xx)
BE (1) BE790729A (xx)
CH (1) CH564251A5 (xx)
DD (1) DD100573A5 (xx)
DE (1) DE2256521A1 (xx)
ES (1) ES408768A1 (xx)
FR (1) FR2161262A5 (xx)
GB (1) GB1384156A (xx)
IT (1) IT968995B (xx)
LU (1) LU66439A1 (xx)
NL (1) NL7215080A (xx)
PL (1) PL81841B1 (xx)
ZA (1) ZA727672B (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55106743A (en) * 1979-02-08 1980-08-15 Inoue Japax Res Inc Magnetic chuck
GB2149597B (en) * 1980-09-11 1985-11-13 Electro Matic Prod Co Battery charge system
BG38909A1 (en) * 1982-07-27 1986-03-14 Makedonski Method and device for acting on ferromagnetic materials
GB8425120D0 (en) * 1984-10-04 1984-11-07 Vent Axia Ltd Dc solenoid circuits
DE3811446A1 (de) * 1988-04-06 1989-10-19 Bodenseewerk Perkin Elmer Co Einrichtung zur erzeugung eines magnetfeldes in einem atomabsorptions-spektrometer
US7439713B2 (en) 2006-09-20 2008-10-21 Pratt & Whitney Canada Corp. Modulation control of power generation system
US8076882B2 (en) 2007-12-26 2011-12-13 Pratt & Whitney Canada Corp. Motor drive architecture with active snubber
US8279648B2 (en) 2008-03-20 2012-10-02 Pratt & Whitney Canada Corp. Power inverter and method

Also Published As

Publication number Publication date
IT968995B (it) 1974-03-20
DE2256521A1 (de) 1973-05-24
NL7215080A (xx) 1973-05-22
FR2161262A5 (xx) 1973-07-06
CH564251A5 (xx) 1975-07-15
LU66439A1 (xx) 1973-02-01
AU4846672A (en) 1974-05-02
BE790729A (fr) 1973-02-15
PL81841B1 (xx) 1975-10-31
DD100573A5 (xx) 1973-09-20
GB1384156A (en) 1975-02-19
ES408768A1 (es) 1975-11-01

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