self inductance

简明释义

自感量

英英释义

例句

1.The coil's self inductance 自感 allows it to store energy in its magnetic field.

这个线圈的自感 自感使其能够在磁场中储存能量。

2.In this circuit, the self inductance 自感 affects the overall impedance.

在这个电路中，自感 自感影响整体阻抗。

3.We need to calculate the self inductance 自感 of the inductor to design the filter.

我们需要计算电感器的自感 自感以设计滤波器。

4.The self inductance 自感 of a solenoid can be increased by adding more turns of wire.

通过增加更多的线圈，螺线管的自感 自感可以增加。

5.When the current changes, the self inductance 自感 generates a voltage that opposes the change.

当电流变化时，自感 自感会产生一个反对变化的电压。

作文

Self inductance is a fundamental property of electrical circuits that plays a crucial role in the behavior of inductors and transformers. When an electric current flows through a conductor, it generates a magnetic field around it. This phenomenon is known as electromagnetism, and it is this principle that underlies the concept of self inductance (自感). The ability of a conductor to induce a voltage in itself due to a change in current is what we refer to as self inductance. In practical terms, when the current flowing through a coil of wire changes, the magnetic field associated with that current also changes. According to Faraday's law of electromagnetic induction, a changing magnetic field will induce a voltage in the coil itself. This induced voltage acts in a direction that opposes the change in current, a phenomenon known as Lenz's Law. As a result, self inductance can be seen as a way for the circuit to resist changes in current, which is particularly useful in various applications such as filters, oscillators, and transformers.One of the key factors that determine the amount of self inductance in a coil is its physical characteristics, including the number of turns in the coil, the area of the coil, and the material around which the coil is wound. For instance, increasing the number of turns in a coil will increase its self inductance, as more loops of wire create a stronger magnetic field. Similarly, using a core material with higher magnetic permeability, such as iron, will enhance the self inductance by concentrating the magnetic field lines within the core.Understanding self inductance is essential for engineers and technicians working with electrical circuits. It helps in the design of circuits that require specific inductive properties, such as those found in radio frequency applications or power electronics. For example, in a radio transmitter, self inductance is used to tune circuits to specific frequencies, allowing for better signal transmission and reception. In power supplies, inductors with specific self inductance values are used to smooth out fluctuations in current, ensuring a stable output.Moreover, self inductance has practical implications in the context of energy storage. Inductors can store energy in their magnetic fields when current flows through them, and this stored energy can be released back into the circuit when needed. This characteristic is utilized in various applications, from simple electronic devices to complex power systems.In conclusion, self inductance (自感) is a vital concept in the field of electromagnetism and electrical engineering. It describes the ability of a conductor to induce a voltage in itself due to changes in current, thereby influencing the behavior of electrical circuits. By understanding and applying the principles of self inductance, engineers can design more efficient and effective electrical systems that harness the power of electromagnetism for a wide range of applications.

自感是电路的一个基本特性，在电感器和变压器的行为中起着至关重要的作用。当电流通过导体流动时，会在其周围产生一个磁场。这种现象被称为电磁学，而这一原理正是自感概念的基础。导体因电流变化而在自身中感应出电压的能力就是我们所称之为自感。从实际角度来看，当流经一圈导线的电流发生变化时，与该电流相关的磁场也会发生变化。根据法拉第电磁感应定律，变化的磁场将在圈内自身感应出电压。这种感应电压的方向与电流变化的方向相反，这一现象称为楞次定律。因此，自感可以被视为电路抵抗电流变化的一种方式，这在滤波器、振荡器和变压器等各种应用中尤为有用。决定线圈自感量的关键因素之一是其物理特性，包括线圈的圈数、线圈的面积以及线圈缠绕的材料。例如，增加线圈的圈数将增加其自感，因为更多的导线圈会产生更强的磁场。同样，使用具有较高磁导率的核心材料，如铁，将通过集中核心内的磁场线来增强自感。理解自感对于从事电路工作的工程师和技术人员至关重要。它有助于设计需要特定电感特性的电路，例如在射频应用或电力电子设备中。例如，在无线电发射器中，自感用于调谐电路到特定频率，从而实现更好的信号传输和接收。在电源中，具有特定自感值的电感器用于平滑电流波动，确保输出稳定。此外，自感在能量存储方面具有实际意义。当电流通过电感器时，电感器可以在其磁场中存储能量，而当需要时，这种存储的能量可以重新释放回电路。这一特性在从简单电子设备到复杂电力系统的各种应用中得到了利用。总之，自感（自感）是电磁学和电气工程领域的重要概念。它描述了导体因电流变化而在自身中感应出电压的能力，从而影响电路的行为。通过理解和应用自感的原理，工程师可以设计出更高效、更有效的电气系统，利用电磁学的力量满足广泛的应用需求。