2020-20J

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Fixed inductors are electrical components used in a variety of analog and digital circuits. They are used to store energy in the form of a magnetic field and are typically composed of a coil of wire wound around a core material. The most common types of inductors are the transformer, the air core inductor, and the ferrite core inductor.

In 2020-20J, the application field of fixed inductors is widely used in many electronic equipment and machinery, such as frequency-variable transformer, electric welding machine, broadcasting station, and other radio and TV receivers. In addition, it can also be used in research and development laboratory, radio communication engineering department, and electrical engineering department.

The working principle of fixed inductors is based on Faraday\'s law of electromagnetic induction. The coil of wire is wound around the core material, and when a varying current flows through the coil, a fluctuating magnetic field is created around the core. This changing magnetic field induces a current in the coil, which in turn produces an opposing magnetic field. The opposition to this motion causes the flux to remain constant while the core continues to exchange energy with the surrounding field. This, in turn, produces an inductive effect on the current.

Fixed inductors use electromagnetic induction to rapidly store and release electrical energy and play a variety of roles. These components are often used in the form of an inductor-capacitor (LC) circuit, as the inductive component helps to store energy while the capacitor releases it. In addition, they can also be used as a resonant circuit, which can be useful for filtering noise or attenuating certain frequencies.

Fixed inductors are also used in radio and television receivers. An inductor can be used to form a tuned circuit, which picks up signals at a specific frequency. By tuning the inductor and the capacitor in the circuit, the receiver can receive a specific frequency band. This allows receivers to receive signals at a much higher sensitivity than other types of receivers.

Finally, fixed inductors are used in switching power supplies and motor drives. By adjusting the inductance of the inductor, a stable DC voltage can be maintained. In addition, by adjusting the inductance of the inductor, the current flowing in the motor can be controlled as well. This makes them ideal for use in motor drives and switching power supplies.

In conclusion, fixed inductors are an important type of component used in many electronic applications. By understanding the working principle of these components, a variety of applications are possible, ranging from radio and television receivers to motor drives and switching power supplies. They are also widely used for their ability to quickly store and release energy, allowing applications that need strong inductive effects.

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