MLG0402P3N9BT000

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Fixed inductors are passive electronic components used extensively in a variety of electrical and electronic circuits. Externally they appear as small coil of wire wrapped around a small air-core. Internally they consist of an inductor or coil made up of a few turns of insulated wire, plus a coupling capacitor to block the DC components of an applied signal and to reduce losses associated with the inductor. The MLG0402P3N9BT000 is a fixed inductor component whose application field and working principle are described below.

Application Field

The MLG0402P3N9BT000 is a high-performance fixed inductor designed for use in high frequency switching power supplies. The application field of this inductor includes filters, voltage regulators, and switching power regulators. It is mainly used in mobile phone chargers, laptop chargers, DC-DC converters, power inverters, and other high frequency power supply applications.

Working Principle

The MLG0402P3N9BT000 operates on the principle of an inductor. An inductor works by creating a magnetic field around the coil when electrical current flows through it. The magnetic field created across the inductor opposes changes in current when an AC or DC voltage is applied to it. This creates a so-called ‘reactive’ circuit, or one that stores energy temporarily while blocking direct current. The inductor in the MLG0402P3N9BT000 also works as an impedance device, that is, it reduces the flow of alternating current to a lower level than the applied voltage.

In practice, the MLG0402P3N9BT000 is used in power supplies to ensure that interference isn\'t caused by notching and the current limit is maintained. This is done by increasing the amount of inductance in the inductor. The inductance of this inductor is high, meaning it offers high impedance to any signal passing through. This helps to reduce EMI and maintain the current limit, ensuring reliable and efficient operation.

The MLG0402P3N9BT000 is also used as an EMI filter, thanks to its high inductance. It helps to prevent interference caused by external sources and helps maintain a certain level of signal integrity. It also helps reduce the voltage drop across the filter, increasing the efficiency of the power supply.

Conclusion

The MLG0402P3N9BT000 is a fixed inductor component designed for use in high frequency switching power supplies. Its application field includes filters, voltage regulators, and switching power regulators, and it is used in mobile phone chargers, laptop chargers, DC-DC converters, power inverters, and other high frequency power supply functions. The MLG0402P3N9BT000 adopts the principle of an inductor, using a combination of high inductance and high impedance to reduce EMI and maintain current limits. It also plays a role in EMI filtering, helping to ensure Signal integrity and improved efficiency.

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