什么是电感 电感是衡量线圈产生电磁感应能力的物理量。给一个线圈通入电流，线圈周围就会产生磁场，线圈就有磁通量通过。通入线圈的电源越大，磁场就越强，通过线圈的磁通量就越大。实验证明，通过线圈的磁通量和通入的电流是成正比的，它们的比值叫做自感系数，也叫做电感。如果通过线圈的磁通量用φ表示，电流用I表示，电感用L表示，那么 L＝ φ／I 电感的单位是亨（H），也常用毫亨（mH）或微亨（uH）做单位。1H=1000mH，1H=1000000uH。 电感的分类: adjustable inductance 可调电感 aerial inductance 天线电感 air core inductance 空心电感线圈 air gap inductance 气隙电感线圈 anode inductance 阳极电感 base lead inductance 基极引线电感 cathode inductance 阴极电感 charging inductance 充电电感 coil inductance 线圈电感 core inductance 铁心电感, 电磁心电感 coupling inductance 耦合电感 damped inductance 阻尼电感 diffusion inductance 扩散电感 distributed inductance 分布电感 dynamic inductance 动态电感 electrical inductance 电感 equivalent inductance 等效电感 field inductance 激磁绕组电感 fluid inductance 流体感应系数 grid inductance 栅路电感 internal inductance 内电感 intrinsic inductance 内磁感应强度 leakage inductance 漏电感 lengthening inductance 加感线圈 line inductance 线路电感 loop inductance 回线[环线]电感; 环形天线电感 lumped inductance 集总电感 magnetizing inductance 磁化电感 mutual inductance 互感(系数) natural inductance 固有电感 nonlinear inductance 非线性电感 power inductance 电力电感 primary inductance 一次绕组电感, 初级线圈电感 printed inductance 印刷电感 pure inductance 纯电感 receiving inductance 接收电感 reciprocal inductance 反向电感, 可逆电感; 可逆感应系数 saturated inductance 饱和电感 secondary inductance 副线圈电感 series inductance 串联电感 shunt inductance 并联电感 solid-state inductance 固态电感 stabilizing inductance 稳流电感 stray inductance 杂散电感, 漏电感 tank circuit inductance 振荡回路电感 threshold inductance 阈电感, 临界电感 transformer inductance 变压器电感 transmission line inductance 传输线电感 trimming inductance 微调电感 tuning inductance 调谐电感 variable inductance 可变电感 其它的语言 意大利语 induttanza, capacità di memorizzare energia sotto forma di campo magnetico, l'unità di induttanza è l'henry. .info www.moreorless.net/diz/MoL_I.html 法语 L'inductance d’un circuit électrique est un coefficient qui traduit le fait qu’un courant traversant le circuit crée un flux d’induction. L’inductance est égale au quotient de ce flux par l’intensité de ce courant. L’unité de l’inductance est le Henry (H). fr.wikipedia.org/wiki/Inductance Induction. A conductor of any kind, passed through a magnetic field, will have a voltage induced in it. perso.wanadoo.fr/e-lektronik/LEKTRONIK/glossaire.htm coefficient (appelé aussi coefficient d'auto-induction ) qui caractérise la propriété d'un circuit de produire un flux à travers lui-même et qui est égal au quotient de la variation de ce flux et de la variation de l'intensité du courant qui le produit. retwine.ixl.u-bordeaux.fr:8080/instruments/HP4194A/description/fr_glossaire_HP4194A.html grandeur caractéristique d'un solénoïde (bobine idéale) s'exprime en Henry (H). ph.barbosa.free.fr/glossaire/glossaire_fichiers/glos.htm 英语 The property of a circuit or circuit element that opposes a change in current flow, thus causing current changes to lag behind voltage changes. It is measured in henrys. www.birnbach.com/TechnicalInformation/glossary/I.htm The property of an electric circuit that opposes a change in current flow. www.customautosounds.com/faq.html (L) In general, the ability of a conductor to produce a magnetic field. In particular, magnetic flux divided by current, measured in henries (H). L=F/I. Or, the voltage (back emf) a conductor generates divided by rate of change of current in that conductor (self inductance) or another conductor (mutual inductance). L= -V/(dI/dt), where dI/dt is the rate of current change. www.rcmicroflight.com/library/glossary.asp refers to the ability of a device to store energy in the form of a magnetic field. Cables have a certain inductance per foot. In its simplest form, an inductor consists of a wire loop or coil. The standard unit of inductance is the henry, abbreviated H. This is a large unit. More common units are the microhenry, abbreviated µH (1 µH =10 -6 H) and the millihenry, abbreviated mH (1 mH =10 -3 H). Occasionally, the nanohenry (nH) is used (1 nH = 10 -9 H). ... www.meritec.com/Pages/custom/glossary.html The capability of a coil to store energy in a magnetic field surrounding it. It produces an impedance to an AC current. Inductance is measured in Henrys, although milliHenry is more common. www.dilettantesdictionary.com/index.php (Motor Winding Constant) - This is the inductance of the motor armature as measured at the motor terminals. It is given in millihenries. www.servomag.com/reference/glossary.htm An electric force field which builds up around a conductor. www.e-ratecentral.com/resources/help/glossary/i.asp The characteristic of coil or wire to cause the current to lag the voltage in time phase. The current reaches its peak after the voltage does. www.usmotors.com/Terms/1-122-I.htm an energy phenomenon that occurs as an electric field changes strength or polarity. During this transition, changes in the field can cause an electrical current to flow in a nearby object. www.assemblymag.com/CDA/ArticleInformation/news/news_item/0,6501,99080,00.html Ratio of the total magnetic flux-linkage in a coil to the current flowing through the coil. (Course Material/EddyCurrents/Physics/inductance.htm) www.ndt-ed.org/GeneralResources/Glossary/letter/i.htm A property of an electric circuit that represents its ability to resist changes in current flow. www.minarik.com/definitions.html The property of an electric circuit by which an electromotive force is induced in it as the result of a changing magnetic flux. Inductive wiretaps use physics of inductance. www.tscmvideo.com/glossaryi.shtml the "size"of an inductor, not the actual physical size, but the "electrical" size. The unit of inductance is the Henry, or "H". Most power supply inductors, or chokes, are measured in henries, typically 2-20H. The inductance of a transformer primary may also be several henries. Smaller inductors are measured in millihenries (mH - 10^-3 henries) or microhenries (uH - 10^-6 henries).www.aikenamps.com/AmpTerms.html coil of wire in which current is induced. www.intmath.com/Complex/Pt7_ap.php The quantitative factor that describes the "inertia" of an electrical circuit to resist changes in current. highered.mcgraw-hill.com/sites/0072480823/student_view0/glossary.html An electromotive force that has been induced by a varying current in a conductor (measured in Henrys). www.satellite-tv-hq.com/telecom-glossary-i.htm Property of a circuit to oppose a change in current. The moving magnetic field produced by a change in current causes an induced voltage to oppose the original change. www.sciencelobby.com/dictionary/i.html Inductance is a value commonly associated with speakers and speaker cables. Inductance occurs when a cable creates an opposing charge which resists the original electrical charge. While inductors are commonly made from a coil of wires, straight wires can exhibit inductance as well. ... www.aviccable.com/i/dictionary.php A changing current in a coil produces a changing magnetic flux. The changing magnetic flux results in an induced current flowing in the coil. The unit is a Henry. One Henry is the inductance of a circuit that produces a counter-force of 1 volt when the current flowing is changing at the rate of 1 amp per second. www.scientificindia.com/gi.htm Inductance opposes a change in current in an electrical circuit. Alternating Current (AC) varies with time; electromotive force is generated to oppose the current flow. Electromotive force is defined as: Force that occurs due to the voltage produced by a magnetic field that is in opposition to the magnetic field that is around a coil. The voltage is induced in the coil when the magnetic field cuts the coil. Current moving through the coil forms a magnetic field around the coil. ... www.peakagents.ca/glossary/i3.htm induction: an electrical phenomenon whereby an electromotive force (EMF) is generated in a closed circuit by a change in the flow of current inductor: an electrical device (typically a conducting coil) that introduces inductance into a circuit wordnet.princeton.edu/perl/webwn Inductance is a physical characteristic of an inductor, which is an electrical device that produces at any time a voltage proportional to the instantaneous rate of change in current flowing through it. The symbol L is used for inductance in honour of the physicist Heinrich Lenz. The SI unit of inductance is the henry (H). The term inductance was coined by Oliver Heaviside in February 1886. en.wikipedia.org/wiki/Inductance |
