What is an inductive element and what is an inductor?

I've seen a transformer, the coil wound with a wire is a kind of inductance In fact, the inductance generally refers to the spiral coil, and when he passes through the changing current, it will produce some different effects from the general wire, so it is called inductance.

The inductor can only act on unsteady currents, and it is characterized by a proportional voltage across the country.

For the instantaneous rate of change (derivative) of the current passing through him, the scale factor is its "self-inductance".

The reason why the inductor works is that it produces a changing magnetic field when it passes through an unsteady current, and this magnetic field will in turn affect the current, so in this way, any conductor, as long as it passes through the unsteady current, will produce a changing magnetic field, which will in turn affect the current, so any conductor will have a self-inductance phenomenon.

The black box contains a component (resistor, capacitor, or inductor). The resistor, capacitor, or inductor in the spare element is only one device. Troubleshooting Recommendations:

l...If there is no phase shift, the unknown component is the resistor. l If the phase is ahead, the unknown component is the capacitor.

l If there is a phase lag, the unknown component is the inductance.

There are many copper wires in it, and an iron core in the middle, which can be measured with a digital bridge.

What is the specific function: there are more, and some high-frequency circuits have the effect of filtering.

An inductor is a circuit element, but what is its structure?

Inductive elements. Concept: The components that can produce an inductive effect are collectively referred to as inductor components.

Function: Resisting AC to DC, resisting high frequency to low frequency (filtering).

Inductors, also called inductance coils, are made using the principle of electromagnetic induction.

Inductors are generally composed of a skeleton, windings, shielding cover, encapsulation material, and a magnetic core or iron core.

Inductance is a property of a closed loop and is a physical quantity.

An inductor (inductance coil) is an electromagnetic induction component wound with an insulated wire, and it is also one of the components commonly used in electronic circuits. Inductance is a group of series coaxial turns wound on the insulating skeleton or magnetic core and iron core with enameled wire, yarn-wrapped wire or plastic leather wire, etc., which is represented by the letter "L" in the circuit, and its main function is to isolate and filter AC signals or form a resonant circuit with capacitors and resistors.

A property of a conductor measured by the ratio of the electromotive force or voltage induced in the conductor to the rate of change of the current that produces it. A steady current produces a stable magnetic field, and a changing current (alternating current) or fluctuating DC produces a changing magnetic field, which in turn induces an electromotive force into the conductor in this magnetic field. The magnitude of the induced electromotive force is proportional to the rate of change of the current.

The proportional factor is called inductance, which is denoted by the symbol L and is measured in Henry (h).

Inductance is a physical quantity that measures the ability of a coil to generate electromagnetic induction. When an unsteady current is fed into the coil, a varying magnetic field is generated around it. The greater the power through the coil, the higher the excitation magnetic field strength, and vice versa, the smaller (before the magnetic induction intensity reaches saturation).

The formula for calculating the inductance of an inductive device:

Method 1: L = ae*n2 l.

Where: l represents the inductance; Indicates the permeability of the core; ae represents the cross-sectional area of the core; n indicates the number of turns of the coil; lm represents the length of the magnetic circuit of the core.

Method 2: Empirical formula: l=(k* 0* s*n2*s) l.

Wherein: 0 is vacuum permeability = 4 *10 (-7); s is the relative permeability of the core inside the coil; s=1; in the case of a hollow coiln2 is the square of the number of coils; The cross-sectional area of the S coil in square meters, and the length of the L coil in meters; k factor, which depends on the ratio of the radius (r) to the length (l) of the coil.

The unit of calculated inductance is Henry (h).

In a circuit, when an electric current flows through a conductor, an electromagnetic field is generated, and the magnitude of the electromagnetic field divided by the magnitude of the current is the inductance, and the definition of inductance is l=phi i, and the unit is Weber.

Inductance is a physical quantity that measures the ability of a coil to generate electromagnetic induction. When an electric current is applied to a coil, a magnetic field is generated around the coil, and magnetic flux passes through the coil. The greater the power supply that goes through the coil, the stronger the magnetic field and the greater the magnetic flux through the coil.

Experiments have shown that the magnetic flux through the coil is proportional to the current passing through, and their ratio is called the self-inductance coefficient, also known as the inductance. If the magnetic flux through the coil is denoted by , the current is denoted by i, and the inductance is denoted by l, then. l＝φ／i

The unit of inductance is hem (h), and millihen (mh) or micro hen (uh) is also commonly used as the unit. 1h=1000mh，1h=1000000uh。

The inductor can only act on unsteady currents, and it is characterized by the fact that the voltage at both ends is proportional to the instantaneous rate of change (derivative) of the current passing through it, and the proportionality coefficient is its "self-inductance".

The reason why the inductor works is that it produces a changing magnetic field when it passes through an unsteady current, and this magnetic field will in turn affect the current, so in this way, any conductor, as long as it passes through the unsteady current, will produce a changing magnetic field, which will in turn affect the current, so any conductor will have a self-inductance phenomenon.

You can see a lot of copper wire winding coils on the motherboard, this coil is called inductance, inductance is mainly divided into two kinds of magnetic inductance and hollow inductance, the magnetic inductance is large and commonly used in the filter circuit, the hollow inductor is small, and is often used in high-frequency circuits.

The characteristics of an inductor are the opposite of those of a capacitor, and it has the property of preventing alternating current from passing through and allowing direct current to pass through smoothly. The characteristics of the inductor are DC and AC resistance, and the higher the frequency, the greater the coil impedance. Inductors often work together with capacitors in circuits to form LC filters, LC oscillators, etc.

In addition, the characteristics of inductors are used to create chokes, transformers, relays, and so on.

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H-East is domestic power

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An inductor is a component that converts an electric current into magnetic field energy, and the inductance value indicates the ability of an electric current to produce a magnetic field. An inductive element is a basic component of a circuit in the circuit model in the discipline of "Circuit Analysis", except for the resistive element r and the capacitive element C. **In sexual circuits, inductive elements are expressed as inductance L.

Inductors, also called inductance coils, are made using the principle of electromagnetic induction. Inductors are generally composed of a skeleton, windings, shielding cover, packaging materials, and a magnetic core or iron core.

Common types of inductors.

The inductor can be made of a coiled magnetic core of conductive material, typically a thick such as copper wire, or the core can be removed or replaced with a ferromagnetic material instead of fiber. The core material, which has a higher permeability than air, can confine the magnetic field more tightly around the inductive element, thus increasing the inductance. There are many types of inductors, most of which are made of an outer layer of enamel coated wire around a ferrite spool, while some protective inductors place the coil completely inside the ferrite.

An inductive element is an energy storage element, and the original model of the inductive element is a wire wound into a cylindrical coil.

The parameter that characterizes the ability of an inductive element (abbreviated as inductor) to generate magnetic flux and store magnetic fields, also called inductance, is denoted by L, which is numerically equal to the flux generated by the unit current of Sakura Silver. Inductive components refer to inductors (inductance coils) and various transformers.

**In sexual circuits, inductive elements are expressed as inductance L. The "volt-ampere relation" of components is a necessary constraint in linear circuit analysis in addition to Kirchhoff's law. The volt-ampere relation of an inductive element is u=l(di dt), that is, the voltage at both ends of the inductive element, except for the inductance l, depends not on the current i itself, but on the rate of change of the current versus time (di dt), unlike the resistive element r.