What are the two main categories of inductive components? What is an inductor?

An inductive element is an energy storage element, and the original model of the inductive element is a wire wound into a cylindrical coil. When a current i is passed through the coil, a magnetic flux is generated in the coil and energy is stored. 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 per unit of current.

The two main categories you say should refer to inductors (inductance coils) and various transformers.

There are many different types of inductive components. All the originals that can produce inductance are collectively referred to as inductance elements, and the commonly used inductive elements are fixed inductors, chokes, TV permanent linear coils, lines, frame oscillation coils, deflection coils, magnetic heads on tape recorders, delay lines, etc.

The inductance coil is made of wires wound around the insulating tube one by one, and the wires are insulated from each other, and the insulating tube can be hollow, or it can contain an iron core or a magnetic powder core, referred to as inductance. Expressed in L, the units are Henry (H), MilliHenry (MH), Micro Henry (UH), 1H=10 3MH=10 6UH. Classified by inductance form:

Fixed inductance, variable inductance. Classified according to the nature of the conductor: air core coil, ferrite coil, iron core coil, copper core coil.

Classified according to the nature of work: antenna coil, oscillation coil, choke coil, notch coil, deflection coil. Classified by winding structure:

Single-layer coils, multi-layer coils, honeycomb coils. 1. Fixed inductor: Generally, a soft magnetic I-shaped core with a lead wire is used, and the inductance can be between 10-22000UH, and the Q value is controlled at about 40.

2. Choke: It is a coil with a certain inductance, which is used to prevent high-frequency currents of certain frequencies from passing through, such as the filter choke coil of the rectifier circuit, the choke coil on the TV, etc. 3. Row linear coils:

It is used to connect with the deflection coil in series and adjust the linearity of the row. It is composed of an I-shaped core coil and a constant magnetic block, and the DC current inductance for general color TV is 116-194uh frequency: line oscillation coil:

It is composed of a skeleton, a coil, an adjustment rod, and a threaded core. Generally, the inductance is 5mh, and the adjustment amount is greater than +-10mh

It is usually divided into two categories: fixed inductance and variable 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. 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.

The main function of the inductor is to isolate and filter the AC signal or form a graphic symbol vibration circuit of the harmonic inductor with capacitors and resistors.

Classified by inductance form: fixed inductance, variable inductance. Classification according to the nature of the conductor:

Air-core coils, ferrite coils, iron-core coils, copper-core coils. Classified according to the nature of work: antenna coil, oscillation coil, choke coil, notch coil, deflection coil.

Classified by winding structure: single-layer coil, multi-layer coil, honeycomb coil.

The two upstairs made it clear.

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.

It is a commonly used electronic component that converts electrical energy into magnetic energy and stores it.

An inductor is an energy storage element, and in the early days it was a wire wound into a cylindrical coil.

The characteristic of the inductor element is that it is "straight through the road".

When the current flowing through the inductor is smooth and pure DC, it is equivalent to a wire capacitance and has little effect (if the wire resistance is ignored). If the current flowing through the inductor is AC or a fluctuating DC, it will hinder the change of current when the current changes. Smooths out the current and doesn't rise or fall suddenly.

"Electrically bailing elements.

It's "circuit du."

Analysis" in the discipline of circuit modeling.

In addition to the resistive element R and the capacitor DAO element C, the basic components of the circuit are all over the same page. In weighted linear 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 the inductive element is v=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).The faster the current changes, the greater the voltage across the inductor, and vice versa. Accordingly, in the "steady-state" case, when the current is DC, the voltage across the inductor is zero; When the current is a sine wave, the voltage at both ends of the inductor is also a sine wave, but it should be ahead of the current (2) in phase; When the current is a periodic isosceles triangle wave, the voltage is a rectangular wave, and so on.

Characteristics of inductor element copies.

1.Dynamic properties.

The voltage of the inductor is related to the rate of change of the current, but not to the current value itself, the changing current produces the changing voltage; There is no quiescent inductor voltage. Therefore, inductive elements are called dynamic elements.

2.Memory properties.

T is indicated by the integral form of the volt-ampere characteristics of the inductive element

The current at the moment is (

t) The accumulation of voltage values during the period, that is, related to the history of voltage, has the function of memorizing voltage, and is a memory element.

il(0) is the initial current (initial state) of the inductor at t=0.

i(0) reflects t=0

The history of the voltage on the inductor before the moment.

The power and energy of the inductive element.

1.The instantaneous power of the inductive element.

Power is related to the magnitude of the current and the rate of change of the current, and can be positive (absorbed power) and negative (supplied power), which is different from resistance.

2.The instantaneous energy of the inductive element.

So the inductor can store energy; p>0 The energy in the absorbed circuit is stored as magnetic field energy; p<0 emits energy into the circuit. However, its instantaneous energy w(t) is always positive and is a passive component.