• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    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>
    公开号:SU1233817A3
    申请号:SU823482526
    申请日:1982-08-17
    公开日:1986-05-23
    发明作者:Карьялайнен Вяйне
    申请人:В йнё Карь лайнен (FI)；
    IPC主号:
    专利说明:

    one
    The invention relates to electrical engineering, more specifically to devices for controlling a direct current electromagnet.
    The aim of the invention is to reduce the size and power consumption.
    FIG. 1 shows a schematic and electrical diagram of the device and electromagnet 5 in FIG. 2–4 are graphs of voltage dependences, respectively, on the coil of the electromagnet Uj and on the capacitors U, U, on time.
    The device (Fig. 1) consists of a bridge rectifier 1, connected through switch 2 to the coil of electromagnet 3. Two polarized capacitors 4 and 5 are interconnected end-to-end, two diodes 6 and 7 are also connected in an opposite way, the capacitors and the diodes are connected in parallel to each other and to the coil of the electromagnet so that the negative poles of the capacitors are connected to the anodes of the diodes, and the positive to the cathodes.
    The device works as follows.
    When the switch 2 is closed, the voltage U is applied to the winding 3 (Fig. 2,), the capacitor 4 is charged through the diode 7 to the voltage U (Fig. 3,), which is higher than the voltage U, and the capacitor 5 charges Under the influence of direct current pulsation through diode 6 to voltage Uj (Fig. 4, which is lower than voltage U.) When opening switch 2, capacitor 4 is discharged, the electromagnetic field creates a self-induction voltage Uj in winding 3
    2338172
    (Fig. 2), which reduces the voltage and (Fig. 3,) in the capacitor 4, increases the voltage U (Fig. 4, T -T) in the capacitor 5, soz5 gives the winding J of the electromagnet a reverse magnetizing current - demagnetizing current. During the demagnetization of the electromagnet, the charges in the capacitors are not discharged.
    Thus, energy is saved that would otherwise be required for magnetization to charge a non-polarized capacitor connected in parallel with the winding of an electromagnet. Polarized capacitors, as electrolytic, are small in size, which allows to reduce the size of the device. In some cases, instead of
    20 polarized capacitors can be used unpolarized.
    Invention Form
    25 A device for controlling a direct current electromagnet, containing a source of direct voltage, connected through a switch to the output terminals to which
    Connection 30: 1 capacitor, characterized in that, in order to reduce overall dimensions and power consumption, it is equipped with an additional capacitor and two diodes, while both capacitors are polarized, connected in series and connected in parallel with the output terminals, two diodes are connected in opposite -consistently
    .- and connected in parallel to the output terminals, we accept the negative poles of the capacitors connected to the anodes of the diodes, and the positive - to the cathodes.
    35
    fig.Z
    Ti
    Editor N. Egorova
    Compiled by A. Lukin.
    Tehred L.Oleynik Proofreader I - Kolb
    Order 2790/60 Circulation 643
    VNRSHPI State Committee of the USSR
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Project, 4
    -TjT
    FIG. four
    Subscription
    权利要求:
    Claims (1)
    [1]
    Claim
    25 A device for controlling a DC electromagnet containing a DC voltage source connected via a switch to output terminals to which
    30, a capacitor is connected, characterized in that, in order to reduce the dimensions and power consumption, it is equipped with an additional 'capacitor' and two diodes, while both capacitors are polarized, connected in series and connected in parallel to the output terminals, two diodes are connected in series and connected parallel to the 4U output terminals, the negative poles of the capacitors connected to the anodes of the diodes, and the positive to the cathodes.
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    同族专利:
    公开号 | 公开日
    FI66701C|1984-11-12|
    AU8707582A|1983-05-12|
    DD210502A1|1984-06-13|
    PL237953A1|1983-04-25|
    SE8204728D0|1982-08-17|
    FI812543L|1983-02-19|
    BE894139A|1982-12-16|
    FR2511806A1|1983-02-25|
    SE454629B|1988-05-16|
    ES515062A0|1983-05-01|
    ZA825870B|1983-06-29|
    NO822795L|1983-02-21|
    YU176882A|1985-04-30|
    SE8204728L|1983-02-19|
    NO158767B|1988-07-18|
    FR2511806B1|1985-12-20|
    JPS5842207A|1983-03-11|
    NL8203232A|1983-03-16|
    IT8248994D0|1982-08-16|
    FI66701B|1984-07-31|
    ATA306282A|1987-01-15|
    IT1206146B|1989-04-14|
    ES8306284A1|1983-05-01|
    BR8204806A|1983-08-02|
    DE3230254A1|1983-03-17|
    CH658743A5|1986-11-28|
    HU191072B|1987-01-28|
    GB2104739A|1983-03-09|
    AT383903B|1987-09-10|
    NO158767C|1988-10-26|
    GB2104739B|1985-05-09|
    DK369682A|1983-02-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3181559A|1960-10-19|1965-05-04|American Brake Shoe Co|Electromagnetic and fluid pressure operated valve and anti-hysteresis control circuit therefor|
    US3329247A|1965-10-06|1967-07-04|Eaton Yale & Towne|Electromagnetic coupling apparatus|
    DE2745997A1|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|1979-11-13|1981-03-11|Siegfried Fleischer|CIRCUIT ARRANGEMENT FOR QUICK-LOADING ELECTROMAGNETS|
    DE3003506C2|1980-01-31|1983-12-01|Deutsches Elektronen-Synchrotron Desy, 2000 Hamburg|Fast control circuit for an electromagnet|GB8425120D0|1984-10-04|1984-11-07|Vent Axia Ltd|Dc solenoid circuits|
    US5227234A|1990-08-10|1993-07-13|Mitsui Petrochemical Industries, Ltd.|Thermal adhesive vibration damping sheets|
    US5354804A|1991-05-09|1994-10-11|Tosoh Corporation|Method of emulsifying thermoplastic resin composition|
    JP2617835B2|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|
    JP2617834B2|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|
    JP2617837B2|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|1991-09-09|1997-06-04|新日本製鐵株式会社|Manufacturing method of high performance lubricated steel sheet|
    GB2320814B|1996-12-31|2000-11-29|Redcliffe Magtronics Ltd|An apparatus for altering the magnetic state of a permanent magnet|
    FR2924527A1|2007-11-29|2009-06-05|Finsecur Soc Par Actions Simpl|METHOD AND DEVICE FOR CLOSING A FIRE DOOR|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI812543A|FI66701C|1981-08-18|1981-08-18|KOPPLINGSFOERFARANDE|
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