JPS57133608A - Direct current electromagnet - Google Patents
Direct current electromagnetInfo
- Publication number
- JPS57133608A JPS57133608A JP1901281A JP1901281A JPS57133608A JP S57133608 A JPS57133608 A JP S57133608A JP 1901281 A JP1901281 A JP 1901281A JP 1901281 A JP1901281 A JP 1901281A JP S57133608 A JPS57133608 A JP S57133608A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnet
- wiring circuit
- relay
- circuit
- magnetic flux
- 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
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
- H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
- H01F7/1838—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current by switching-in or -out impedance
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
PURPOSE:To miniaturize the electromagnet by a method wherein, in an electromagnetic contactor, an electromagnetic brake, or the direct current electromagnet to be used for other various uses, a lead switch is mounted on the wiring circuit of the above, and the current to be applied before and after attraction is controlled. CONSTITUTION:The circuit, with which a current is supplied to the wiring circuit 11 constituting the direct current electromagnet, is constituted as follows; namely, a circuit wherein a resistor 12 and the contacting piece 13 of a relay 15 are connected in parallel, are inserted between a closing contact piece 14 and a wiring circuit 11. Also, a lead switch 36 located along the wiring circuit 11 is connected on the input side of the relay 15. If the electromagnet is constituted as above, the magnetic flux when the movable core of the electromagnet is attracted has a large consumption percentage at a large air gap, the magnetic flux density of the core can be reduced, the core is saturated as the air-gap becoming smaller due to the attracted movable core, and the leakage magnetic flux is rapidly increased. Thus, the lead switch 36 is turned ON to actuate the relay 15 and the contacting piece 13 is turned OFF. A resistance 12 is inserted into the coil 11 thus to decrease the current passing through the coil 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1901281A JPS57133608A (en) | 1981-02-13 | 1981-02-13 | Direct current electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1901281A JPS57133608A (en) | 1981-02-13 | 1981-02-13 | Direct current electromagnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57133608A true JPS57133608A (en) | 1982-08-18 |
Family
ID=11987583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1901281A Pending JPS57133608A (en) | 1981-02-13 | 1981-02-13 | Direct current electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57133608A (en) |
-
1981
- 1981-02-13 JP JP1901281A patent/JPS57133608A/en active Pending
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