SC73B-390

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Fixed inductors, also known as choke coils or inductors, are widely used in industrial applications, including SC73B-390. The SC73B-390 is an inductor with a Diameter of 7.3mm, an Height of 3.9mm and an inductance of 1μH. The main characteristics of this type of inductors are low resistance, low current noise, good thermal stability, and high frequency operation.

The main applications of SC73B-390 fixed inductors are LED driver, PFC pre-filter, AC/DC power supply, DC/AC inverter, and switching power supply. For LED drivers, SC73B-390 inductors can be used to provide a reliable power supply to the LED circuit, reducing power loss and ensuring longer life of the drivers. In PFC pre-filter, the inductors can prevent EMI and improve the efficiency of power conversion. In AC/DC power supply applications, the SC73B-390 inductors are used to filter the audio signal and reducing ripple, resulting in a cleaner audio output. In DC/AC inverter, the inductor serves as an energy storage device, which helps to maintain the output voltage and current stability. Finally, in switching power supplies, the SC73B-390 inductors can be used to filter the high-frequency switch noise and ensure the stability of the output.

The working principle of the SC73B-390 fixed inductors relies on the electromagnetic induction theory. Under the action of an alternating current, an electromagnetic field is generated in the coil, which passes through the air, surrounding the coil with a magnetic field. When current flows and the magnetic field changes, a voltage is induced across the coil, and this induced voltage opposes the original source voltage, known as reactance. This is the basic principle of inductance. When an alternating current is applied to the inductor, reactance is created, which limits the current flowing through the inductor.

In conclusion, the SC73B-390 fixed inductors provide many advantages in applications such as LED driver, PFC pre-filter, AC/DC power supply, DC/AC inverter, and switching power supply. This inductor works by creating a magnetic field, and inducing a voltage in the coil; this induced voltage opposes the original voltage, known as reactance. With its low resistance, low current noise, high frequency operation and good thermal stability, the SC73B-390 fixed inductor is a great choice for many industrial applications.

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