LAL04SK4R7K

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Fixed inductors, also known as electronic coils, are passive components that store energy in the form of a magnetic field, so they are also called chokes or coils. These components can be used to filter out AC signals or to serve as oscillators. The fixed inductor is generally composed of copper wire wound around a core material such as iron or permalloy, which can increase the inductance of the device. The core material also provides a return path for the magnetic field, which greatly reduces the loss of energy. The LAL04SK4R7K inductor is a special fixed inductor that is commonly used in electronic circuits.

The LAL04SK4R7K inductor is composed of a coil wound around a ferrite core, which allows it to take advantage of the core’s high frequency characteristics. Its rated current is 4A, with an inductance value of 4.7uH. It also has a low DC resistance of 0.07ohms, suitable for use in high frequency switching circuits. It has a high saturation current and low series resistance, which can help reduce power losses. In addition, its magnetic shielding meshes can also minimize the external influence of magnetic fields.

The LAL04SK4R7K inductor is widely used in a variety of electronic circuits. It is especially suitable for DC/DC converters, SMPS, motor drivers, HID lamps, LED lighting, telecom, metering, consumer electronics, and other power supply applications that require high ripple current and high efficiency. It is also commonly used in computer motherboards, automotive electronics, and other electronic circuits that require low noise, low loss, and high sensitivity.

The working principle of the LAL04SK4R7K inductor is based on the electromagnetic induction law. When an alternating current passes through the inductor, a magnetic field is generated around it. According to electromagnetic induction law, when the current changes, the magnetic field generated will also induce electromotive force around the inductor, resulting in a counter-emf that works against the primary emf, thus forming an inductance voltage. This voltage will be inversely proportional to the rate of change of the current, thus maintaining a constant current through the inductor, and allowing it to filter out electrical signals and provide current stability.

In conclusion, the LAL04SK4R7K inductor is a type of fixed inductor with excellent performance and a wide application field. It can be used for high frequency filtering, as well as provide current stability for a variety of electronic circuits. Its working principle is based on the electromagnetic induction law, which can provide a counter-emf to maintain the current stability in the circuit and thus filter out electrical signals.

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