Ⅰ. Working principle of inductor components

Ⅱ.Inductor component structure

Ⅲ. The role of inductance components in the circuit

Ⅳ. The difference between inductance and capacitance

Ⅴ.Characteristics of inductance components

Ⅵ. History of inductance components

Ⅶ. How to achieve mutual inductance in inductance components

Ⅷ. Quality factor of inductive components

The **Inductor Components** is an energy storage element. The original model of the Inductor Components is a wire wound into a cylindrical coil. When a current i is passed through the coil, magnetic flux Φ will be generated in the coil and energy will be stored. A parameter that characterizes the ability of an inductive component (inductor for short) to generate magnetic flux and store a magnetic field, also called inductance, represented by L, which is numerically equal to the magnetic linkage generated by unit current.

The Inductor Components is a basic circuit element in the circuit model in the discipline of circuit analysis, except for the resistance element R and the capacitance element C. In a linear circuit, the Inductor Components is represented by the inductance L. The "volt-ampere relationship" of components is a necessary constraint in linear circuit analysis in addition to Kirchhoff's laws.

An inductive element usually consists of a coil or coil consisting of windings and one or more magnetic cores such as iron cores. When current passes through the coil windings, the resulting magnetic field is stored in the core, which constitutes the basic principle of the inductive element.

**Ⅰ. Working principle of inductor components**

Inductive elements are based on electromagnetic induction, when current passes through an inductive element, it generates a magnetic field, which in turn interacts with the magnetic field generated by the current. Inductance is to wind the wire into a coil shape. When the current flows, a strong magnetic field will be formed at both ends of the coil (inductance). Due to the effect of electromagnetic induction, it will hinder the change of current. Therefore, the inductor presents a small resistance to DC (approximately a short circuit) and a high impedance to AC, and its resistance is related to the frequency of the AC signal passing through it. For the same inductive element, the higher the frequency of the alternating current, the greater the resistance.

1. Electromagnetic induction: The current in the inductive element will generate a magnetic field around it. This magnetic field is created by moving charges in an electric current. According to Faraday's law of electromagnetic induction, when the magnetic field changes, an induced electromotive force (voltage) is generated in the inductive element.

2. Mutual Inductance: The phenomenon that inductive components can also affect each other is called mutual inductance. When the magnetic fields of two inductive elements interact, an induced electromotive force is generated between them, causing a change in the potential difference. Mutual inductance is commonly found in multi-winding inductive components such as transformers.

3. Self-Inductance: When the current passes through the inductive element, the magnetic field generated will interact with the current passing through the element. This causes the potential difference across the inductive element to increase, thus resisting the change in current flow. This phenomenon is known as self-inductance, and the result is that the inductive element resists a sharp change in current, manifested as a self-induced voltage.

**Ⅱ.Inductor component structure**

**Transformer**

**Ⅲ. The role of inductance components in the circuit**

**Ⅳ. The difference between inductance and capacitance**

**Ⅴ.Characteristics of inductance components**

**Ⅵ. History of inductance components**

**Ⅶ. How to achieve mutual inductance in inductance components**

**Transformer:**Transformer is an important application of mutual inductance. In a transformer, there are two windings, one is the primary winding and the other is the secondary winding. When the current in the main winding changes, the generated magnetic field affects the secondary winding through the iron core, thereby inducing an electromotive force in the secondary winding to realize the transmission and conversion of electrical energy.

**Ⅷ. Quality factor of inductive components**

Tags：Magnetics - Transformer Inductor Components inductor components