SE8204728L - CLUTCH DEVICE FOR CONNECTING AND DEMAGNETIZING DIRECTLY-ELECTRIC ELECTRON MAGNETS - Google Patents
CLUTCH DEVICE FOR CONNECTING AND DEMAGNETIZING DIRECTLY-ELECTRIC ELECTRON MAGNETSInfo
- Publication number
- SE8204728L SE8204728L SE8204728A SE8204728A SE8204728L SE 8204728 L SE8204728 L SE 8204728L SE 8204728 A SE8204728 A SE 8204728A SE 8204728 A SE8204728 A SE 8204728A SE 8204728 L SE8204728 L SE 8204728L
- Authority
- SE
- Sweden
- Prior art keywords
- electromagnet
- coil
- capacitors
- current
- voltage
- Prior art date
Links
Classifications
-
- 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
Landscapes
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Electronic Switches (AREA)
- Electromagnets (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Magnetically Actuated Valves (AREA)
- Rectifiers (AREA)
- Jigs For Machine Tools (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Relay Circuits (AREA)
Abstract
A circuit arrangement for enabling the magnetization and demagnetization of electromagnets operated by direct current utilising the self induction current produced in the coil of the electromagnet has two polarized capacitors (C1, C2) connected in parallel with the coil (L) of an electromagnet (M), the capacitors being series connected such that their like poles are connected to each other and a reverse direction diode (D1, D2) is connected in parallel with each capacitor (C1, C2). The magnetizing voltage charges one of the capacitors (C1) through diode (D1) so that it will not be damaged by the self induction voltage produced in the coil (L) of the electromagnet (M) after the magnetizing current has been cut off, the voltage being opposite to the polarity of the capacitor (C1). The electrical energy produced by self induction in the coil (L) of the electromagnet (M) after the magnetizing current has been cut off will become charged and levelled out into the capacitors (C1, C2), producing a low resistance to the self-induction voltage and thus causing strong demagnetizing current in the coil (L) of the electromagnet (M). In alternative circuits only one diode is used (Figs. 2, 3, not shown), and one or both of the capacitors may be a non-polarised capacitor. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI812543A FI66701C (en) | 1981-08-18 | 1981-08-18 | KOPPLINGSFOERFARANDE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8204728D0 SE8204728D0 (en) | 1982-08-17 |
| SE8204728L true SE8204728L (en) | 1983-02-19 |
| SE454629B SE454629B (en) | 1988-05-16 |
Family
ID=8514636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8204728A SE454629B (en) | 1981-08-18 | 1982-08-17 | DEVICE FOR CONNECTING DIRECTIVES, INDUCED SPEC ELECTRON MAGNETS, AND DISMAGNETIZING THEM |
Country Status (22)
| Country | Link |
|---|---|
| JP (1) | JPS5842207A (en) |
| AT (1) | AT383903B (en) |
| AU (1) | AU8707582A (en) |
| BE (1) | BE894139A (en) |
| BR (1) | BR8204806A (en) |
| CH (1) | CH658743A5 (en) |
| DD (1) | DD210502A1 (en) |
| DE (1) | DE3230254A1 (en) |
| DK (1) | DK369682A (en) |
| ES (1) | ES515062A0 (en) |
| FI (1) | FI66701C (en) |
| FR (1) | FR2511806B1 (en) |
| GB (1) | GB2104739B (en) |
| HU (1) | HU191072B (en) |
| IT (1) | IT1206146B (en) |
| NL (1) | NL8203232A (en) |
| NO (1) | NO158767C (en) |
| PL (1) | PL237953A1 (en) |
| SE (1) | SE454629B (en) |
| SU (1) | SU1233817A3 (en) |
| YU (1) | YU176882A (en) |
| ZA (1) | ZA825870B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8425120D0 (en) * | 1984-10-04 | 1984-11-07 | Vent Axia Ltd | Dc solenoid circuits |
| EP0470589A3 (en) * | 1990-08-10 | 1992-10-14 | Mitsui Petrochemical Industries, Ltd. | Thermal adhesive vibration damping sheets |
| US5354804A (en) * | 1991-05-09 | 1994-10-11 | Tosoh Corporation | Method of emulsifying thermoplastic resin composition |
| JP2617834B2 (en) * | 1991-08-27 | 1997-06-04 | 新日本製鐵株式会社 | Manufacturing method of lubricated plated steel sheet with excellent surface properties |
| JP2617835B2 (en) * | 1991-08-27 | 1997-06-04 | 新日本製鐵株式会社 | Manufacturing method of lubricated plated steel sheet with excellent paint adhesion |
| JP2617837B2 (en) * | 1991-09-06 | 1997-06-04 | 新日本製鐵株式会社 | Method for producing lubricated plated steel sheet with excellent slidability and press workability |
| JP2617838B2 (en) * | 1991-09-09 | 1997-06-04 | 新日本製鐵株式会社 | Manufacturing method of high performance lubricated steel sheet |
| GB2320814B (en) * | 1996-12-31 | 2000-11-29 | Redcliffe Magtronics Ltd | An apparatus for altering the magnetic state of a permanent magnet |
| FR2924527A1 (en) * | 2007-11-29 | 2009-06-05 | Finsecur Soc Par Actions Simpl | METHOD AND DEVICE FOR CLOSING A FIRE DOOR |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3181559A (en) * | 1960-10-19 | 1965-05-04 | American Brake Shoe Co | Electromagnetic and fluid pressure operated valve and anti-hysteresis control circuit therefor |
| US3329247A (en) * | 1965-10-06 | 1967-07-04 | Eaton Yale & Towne | Electromagnetic coupling apparatus |
| DE2745997A1 (en) * | 1977-10-13 | 1979-04-19 | Sew Eurodrive Gmbh & Co | ARRANGEMENT FOR CONTROLLING THE SWITCHING ON AND OFF BEHAVIOR OF INDUCTIVITIES SUCH AS ELECTROMAGNETS OR THE LIKE. |
| DD147016A1 (en) * | 1979-11-13 | 1981-03-11 | Siegfried Fleischer | CIRCUIT ARRANGEMENT FOR QUICK-LOADING ELECTROMAGNETS |
| DE3003506C2 (en) * | 1980-01-31 | 1983-12-01 | Deutsches Elektronen-Synchrotron Desy, 2000 Hamburg | Fast control circuit for an electromagnet |
-
1981
- 1981-08-18 FI FI812543A patent/FI66701C/en not_active IP Right Cessation
-
1982
- 1982-08-10 AT AT0306282A patent/AT383903B/en not_active IP Right Cessation
- 1982-08-11 AU AU87075/82A patent/AU8707582A/en not_active Abandoned
- 1982-08-12 CH CH4852/82A patent/CH658743A5/en not_active IP Right Cessation
- 1982-08-13 DE DE19823230254 patent/DE3230254A1/en not_active Withdrawn
- 1982-08-13 ZA ZA825870A patent/ZA825870B/en unknown
- 1982-08-16 IT IT8248994A patent/IT1206146B/en active
- 1982-08-16 YU YU01768/82A patent/YU176882A/en unknown
- 1982-08-16 GB GB08223526A patent/GB2104739B/en not_active Expired
- 1982-08-17 SU SU823482526A patent/SU1233817A3/en active
- 1982-08-17 SE SE8204728A patent/SE454629B/en not_active IP Right Cessation
- 1982-08-17 JP JP57141770A patent/JPS5842207A/en active Pending
- 1982-08-17 ES ES515062A patent/ES515062A0/en active Granted
- 1982-08-17 NO NO822795A patent/NO158767C/en unknown
- 1982-08-17 BR BR8204806A patent/BR8204806A/en unknown
- 1982-08-17 NL NL8203232A patent/NL8203232A/en not_active Application Discontinuation
- 1982-08-17 DD DD82242577A patent/DD210502A1/en unknown
- 1982-08-18 DK DK369682A patent/DK369682A/en not_active Application Discontinuation
- 1982-08-18 HU HU822679A patent/HU191072B/en unknown
- 1982-08-18 FR FR8214295A patent/FR2511806B1/en not_active Expired
- 1982-08-18 PL PL23795382A patent/PL237953A1/en unknown
- 1982-08-18 BE BE0/208835A patent/BE894139A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| IT1206146B (en) | 1989-04-14 |
| AU8707582A (en) | 1983-05-12 |
| FI66701B (en) | 1984-07-31 |
| IT8248994A0 (en) | 1982-08-16 |
| DE3230254A1 (en) | 1983-03-17 |
| FI812543L (en) | 1983-02-19 |
| ZA825870B (en) | 1983-06-29 |
| NO158767B (en) | 1988-07-18 |
| FR2511806A1 (en) | 1983-02-25 |
| SU1233817A3 (en) | 1986-05-23 |
| ES8306284A1 (en) | 1983-05-01 |
| GB2104739B (en) | 1985-05-09 |
| JPS5842207A (en) | 1983-03-11 |
| GB2104739A (en) | 1983-03-09 |
| NO158767C (en) | 1988-10-26 |
| ATA306282A (en) | 1987-01-15 |
| DD210502A1 (en) | 1984-06-13 |
| SE8204728D0 (en) | 1982-08-17 |
| DK369682A (en) | 1983-02-19 |
| YU176882A (en) | 1985-04-30 |
| CH658743A5 (en) | 1986-11-28 |
| FR2511806B1 (en) | 1985-12-20 |
| FI66701C (en) | 1984-11-12 |
| ES515062A0 (en) | 1983-05-01 |
| BE894139A (en) | 1982-12-16 |
| NO822795L (en) | 1983-02-21 |
| NL8203232A (en) | 1983-03-16 |
| HU191072B (en) | 1987-01-28 |
| BR8204806A (en) | 1983-08-02 |
| AT383903B (en) | 1987-09-10 |
| SE454629B (en) | 1988-05-16 |
| PL237953A1 (en) | 1983-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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