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  • JFEM电机引接线JFEM电机绕组线电机引出线
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    详细信息

    江苏春晨电缆有限公司生产供应JFEM电机引接线JFEM电机绕组线电机引出线,互感现象及互感电动势
    Mutual inductance and mutual inductance electromotive force

    互感现象如果右图所示为两个相邻的两个有互感器耦合的线圈1和2,他们分别通有电流I1和I2,I1激发的磁场的磁力线部分穿过了线圈2,我们这儿用磁通量Φ12表示,当线圈1中的电流I1发生变化时,穿过线圈2的磁通Φ12也要发生变化,因而在线圈2内产生感应电动势e12( 穿过线圈的磁通发生变化而产生的感应电动势);同理,当线圈2中的电流I2发生变化时,I2所产生的磁场在线圈1的磁通Φ21也发生变化,因而在线圈1中也会产生感应电动势e21;供应JFEM电机引接线JFEM电机绕组线电机引出线
    If the mutual inductance phenomenon shown on the right is two a transformer coupling coil two adjacent 1 and 2, respectively with current I1 and I2, part of I1 excitation magnetic field through the magnetic coil 2, here we use magnetic flux Phi 12 said, when the current I1 coil 1 changes, through the 2 of the 12 coil flux will change, so the coil 2 induced electromotive force (EMF E12 magnetic flux through the coil the change); similarly, when the current I2 coil changes, flux of magnetic field coil I2 generated 1 of the 21 changes. The 1 coil will produce electromotive force e21;
    这种由一个线圈中电流的变化,而在另一个线圈中引起的电磁感应现象称为互感现象,所产生的电动势叫做互感电动势。
    The electromagnetic induction phenomenon caused by the change of current in one coil and in another coil is called the mutual inductance phenomenon, and the electromotive force generated is called mutual inductance electromotive force.
    互感电动势e12跟其他感应电动势一样,与穿过线圈2的磁通量变化率磁通量变化率成正比(前面加△表示这是个有变化的量)。而在Φ12跟I1成正比,△Φ12跟△I1也成正比。由此可知互感电动势e12=磁通量变化率跟互感成正比,即互感电动势e12的大小可表示为:
    Transformer electromotive force E12 with other EMF, flux rate is proportional to the rate of change of magnetic flux through the coil and 2 (delta front said that this is a change of volume). But in a 12 proportional to I1, delta phi 12 with delta are proportional to I1. As a result, the change rate of e12= magnetic flux is proportional to the mutual inductance, that is, the size of the mutual inductance electromotive force E12 can be expressed as:
    互感电动势
    Electromotive force of mutual inductance
    同理,由于线圈2中电流I2的变化在线圈1中产生的互感电动势e21的大小可表示为供应JFEM电机引接线JFEM电机绕组线电机引出线
    In the same way, due to the change of the current I2 in the coil 2, the size of the mutual inductance electromotive force E21 produced in the loop 1 can be expressed as the size of the electric potential.
    线圈互感电动势
    Coils mutual inductance electromotive force
    E12、E21的方向可有楞次定律判定。
    The direction of E12 and E21 can be determined by Lenz's law.
    互感系数
    Mutual inductance coefficient

    上面互感电动势e12公式中M12称为线圈1对线圈2的互感系数;后面e21公式中的M21称为线圈2对线圈1的互感系数??梢灾っ?,M12=M21,并用M表示,M就称为这两个线圈的互感系数。即:
    In the above mutual inductance electromotive force E12 formula, M12 is called the mutual inductance coefficient of coil 1 to coil 2; the M21 in the back E21 formula is called the mutual inductance coefficient of coil 2 to coil 1. It can be shown that, M12=M21 and M, M is called the mutual inductance of the two coils. That is:
    互感系数
    Mutual inductance coefficient
    互感系数简称互感,其单位与自感相同,为亨利,简称亨,国际符号是H。它的大小取决于两个线圈的几何形状、大小、相对位置、各自的匝数以及他们周围介质的磁导率?;ジ蠱的计算一般都比较复杂,常通过实验方法测定。
    Mutual inductance is referred to as mutual inductance, and its unit is the same as self inductance. It is Henry, abbreviated as Henry, and the international symbol is H. Its size depends on the geometry, size, relative position of the two coils, the number of turns, and the permeability of the media around them. The calculation of mutual inductance M is usually complex and often measured by experimental method.
    互感现象应用
    Application of mutual inductance phenomenon

    互感现象在电工和电子技术中应用很广,通过互感,线圈使能量或信号由一个线圈很方便地传递到另一个线圈,利用互感现象的原理可制作变压器、感应圈等。
    Mutual inductance is widely applied in electrical and electronic technology. By means of mutual inductance and coil, energy or signal can be easily transferred from one coil to another coil, making use of the principle of mutual inductance to make transformer, induction coil and so on.
    互感现象在某些情况下也会带来不利的影响,例如,有线电话往往由于电话之间的互感而可能造成串音。在电子线路中,由于线圈位置安排不当,或者导线及部件之间的互感造成干扰,甚至使电路不能正常工作,在这种情况下应设法减少互感耦合。例如把线圈间的距离增大或使用两线圈垂直放置。在某些特殊情况下还可以把线圈或其它元件用铁磁材料屏蔽,以消除互感的有害影响。
    The phenomenon of mutual inductance can also have adverse effects in some cases, for example, cable phones often cause crosstalk because of mutual inductance between the telephone. In the electronic circuit, due to the improper arrangement of the coil position, or the mutual inductance between wires and components, causing interference or even the circuit can not work normally, we should try to reduce mutual inductance coupling in this case. For example, the distance between the coils is increased or the two coil is vertically placed. In some special cases, the coil or other elements can be shielded with ferromagnetic materials to eliminate the harmful effects of mutual inductance.
      

    • 品牌
      春晨
    • 型号
      JFEM
    • 规格
      50
    • 材质
      黄铜
    • 适用范围
      500
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