The working principle of inductance, the role and principle of inductance

When an electric current flows through a coil, a magnetic field is generated, and when the current changes, the magnetic field will change accordingly, and the change in the magnetic field will induce a current in the opposite direction of the current to try to stop the change of current, and the coil is called inductance to suppress the change of current. The principle is the principle of self-inductance.

DC does not cause a change in the magnetic field, so it can pass through the inductor smoothly, while AC causes a change in the magnetic field, so it will have a hindrance effect, so the inductor has the characteristic of "straight and resisting AC", and many circuits also use this characteristic of inductance for filtering.

Working principle] inductance coil when added alternating current, its own current changes, causing its own magnetic flux to change and cause induced electromotive force, this phenomenon is called self-inductance, the direction of self-inductance is always hindered by the current change that causes self-inductance, when the AC current is enhanced, the self-inductance current is opposite to the direction of the alternating current, when the AC current is weakened, the self-inductance current is the same as the direction of the alternating current, so that the AC has a blocking effect.

1. [Inductance].

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. Under the same current, the wire is wound into a multi-turn coil, which can increase the magnetic field, and the magnetic field can be greatly increased by adding magnetic permeability materials such as iron cores inside the circle, so the common inductors are coils with built-in iron cores.

2. [Substitution principle].

1. The inductance coil must be replaced by the original value (the number of turns is equal and the size is the same).

2. The chip inductor only needs to be the same size, and it can also be replaced by 0 ohm resistance or wire.

When the inductance coil is added with alternating current, its own current changes, causing its own magnetic flux to change and cause induced electromotive force, this phenomenon is called self-inductance, the direction of self-inductance is always hindered by the current change that causes self-inductance, when the alternating current is enhanced, the self-inductance current is opposite to the direction of alternating current, when the alternating current is weakened, the self-inductance current is the same as the direction of alternating current, so that it has a blocking effect on AC.

Explain the principle of three types of ceiling fan governors, and this time describe inductive governors in detail.

Summary. Hello dear, I am happy to answer for you, inductance generally refers to inductors. An inductor is a component that converts electrical energy into magnetic energy and stores it.

An inductor is similar in structure to a transformer, but with only one winding. Inductive appliances have a certain inductance, which only hinders the change of current.

Hello dear, I am happy to answer for you, inductance generally refers to inductors. An inductor is a component that converts electrical energy into magnetic energy and stores it. An inductor is similar in structure to a transformer, but with only one winding.

Inductive appliances have a certain inductance, which only hinders the change of current.

Basic functions: filtering, oscillation, delay, notching. Figurative Statement:

DC, AC resistance; DC: The so-called DC means that in the DC circuit, the role of the inductor is equivalent to a wire, and it does not play any role; Resistive AC: In the AC circuit, the inductor will have impedance, that is, XL, and the current of the entire circuit will become smaller, which has a certain obstruction effect on the AC Detailed explanation:

In electronic circuits, the inductance coil acts on the AC current limiting, and it can form a high-pass or low-pass filter, phase-shifting circuit and resonant circuit with a resistor or capacitor. The function of the inductor is to hinder the change of current, but this effect is different from the resistance to hinder the current flow, the resistance obstructs the current flow effect is marked by the consumption of electric energy, and the inductor hinders the change of the current is purely not to let the current change, when the current increases, the inductance hinders the increase of the current, and when the current decreases, the inductance hinders the decrease of the current. When the inductor increases the current it temporarily stores the energy of the electricity in the form of a magnetic field, and when the current decreases, it also releases the energy of the magnetic field, and as a result, it hinders the change of the current.

The working principle of the inductor inductor coil when the alternating current is added, the current of the inductance changes, causing the change of its own magnetic flux and causing the inductive electromotive force, this phenomenon is called self-inductance, the direction of the self-inductance current always hinders the current change that causes the self-inductance, when the AC current is enhanced, the self-inductance current is opposite to the direction of the alternating current, when the AC current is weakened, the self-inductance current is the same as the direction of the alternating current, so that the AC has a blocking effect.

Function: SMD inductor is an electromagnetic induction element wound with insulated wires. It is a commonly used inductive element.

The function of SMD inductor: DC resistance AC This is a simple statement, isolating the AC signal, filtering or forming a resonant circuit with capacitors, resistors, etc. The role of tuning and frequency selection inductors:

The inductance coil and capacitor can be connected in parallel to form an LC tuning circuit. Any current in the circuit of the chip inductor will produce a magnetic field, and the magnetic flux of the magnetic field will act on the circuit.

Self-inductanceWhen an electric current passes through the coil, a magnetic field is generated around the coil. When the current in the coil changes, the magnetic field around it also changes accordingly, and this changed magnetic field causes the coil itself to generate an induced electromotive force (induced electromotive force) (the electromotive force is used to represent the terminal voltage of the ideal power supply of the active component), which is called self-inductance.

When two inductance coils are close to each other, the change in the magnetic field of one inductance coil will affect the other inductance coil, and this effect is called mutual inductance. The magnitude of the mutual inductance depends on the degree to which the self-inductance of the inductance coil is coupled with the two inductance coils, and the components made using this principle are called transformers.

The inductance includes the functions of direct current, blocking the bright current, etc., and the working principle is self-inductance and mutual respect and judgment. Inductive. There are many functions, including direct current, resistance AC, the higher the frequency, the greater the impedance of the coil to rush lead, and the working principle of inductance is self-inductance and mutual inductance, and inductance can be divided into oscillation inductance, correction inductance, picture tube deflection inductance, etc.

Inductance: It is a two-end component used for filtering, timing, and power electronics applications, and is an energy storage element that can convert electrical energy into magnetic energy and store it. <>

How an inductor works:

The inductance is to wind the wire into a coil shape, and when the lead limb is in the field of current flowing, a strong magnetic field will be formed at both ends of the ** circle (inductance). Due to the effect of electromagnetic induction, it will hinder the change of current. Therefore, the inductor presents a very small resistance to DC (similar to a short circuit) and a high impedance to AC, and its resistance is related to the frequency of the AC signal being passed.

The higher the frequency of the same inductive element, the higher the frequency of the current passing through it, the greater the resistance value. <>

The role and working principle of the inductor is as follows:

The role of inductance: filtering, oscillation, delay, notch; The shape of the ruler is like saying: direct current, blocking AC. Inductance is the ratio of the magnetic flux of the wire to the current used to produce the alternating magnetic flux generated around the inside of the wire when an alternating current passes through the wire.

Inductance is the ratio of the magnetic flux of the conductor to the current that produces the alternating magnetic flux generated around the inside of the conductor when an alternating current passes through the conductor hall. When a DC current is passed through the inductor, only a fixed magnetic field line appears around it, which does not change with time; However, when an alternating current is passed through the circle, magnetic field lines that change with time will appear around it.

Inductance Introduction:

Inductance is a property of a closed loop and is a physical quantity. When the coil passes through the current, a magnetic field induction is formed in the coil, and the induced magnetic field will produce an induced current to resist the current passing through the coil. This interaction between the current and the coil is called the inductive reactance of electricity, that is, the inductance, and the unit is "Henry (h)", named after the American scientist Joseph Henry.

A property of a conductor, measured by the ratio of the electromotive force or old 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).