AISC-1812H-4R7N-T

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Fixed inductors play a key role in power electronic applications due to their functionality and performances. The AISC-1812H-4R7N-T is a specific fixed inductor that has a wide range of uses. In this article, we will take a closer look at the application field and working principle of this specific fixed inductor.

Introduction

The AISC-1812H-4R7N-T is a fixed inductor that has a series-rated operating range from 3.32 to 4.19 mH. This inductor is specifically designed for use in professional high power audio applications. It has a 10% tolerance value, with a rated current of 4.7 A and a maximum impedance of 16.2Ω. Furthermore, it has a maximum working temperature of 125°C and a self-resonant frequency of 450 MHz. It is primarily suitable for applications such as electromagnetic interference (EMI) filtering, DC-DC power converters and in instrumentation.

Application field

The AISC-1812 H-4R7N-T is suitable for a wide range of applications, including in professional high-power audio systems, such as in automotive applications, where it provides improved signal feed-through in order to reduce noise and electromagnetic interference (EMI) from other components. Additionally, it can be used in telecommunications and data communications because of its robust and reliable performance. It can also be used as an EMC noise-reducing device as it can reduce high-frequency noise generated in various equipment.

It is also suitable for DC-DC converter applications, such as in power converters and inverters, due to its high current and impedance characteristics. Additionally, it is suitable for instrumentation applications such as oscilloscopes, signal generators and amplifiers, due to its small size and high power capacity.

Working Principle

The AISC-1812H-4R7N-T operates using a core and winding principle. The inductor consists of a series of windings which are coated by a magnetic core made of ferrite, nickel-iron or a similar material. The windings are connected such that a current flowing through them produces a magnetic field around the core, which causes opposing current, or induced current, in the windings. This opposition to current flow is referred to as inductive reactance, and it is this property which the inductor uses to filter signals. The inductive reactance is inversely proportional to the frequency of the signal, meaning that the higher the frequency of the signal, the lower the inductive reactance.

Additionally, the inductor can be used to store energy. When an increasing current is passed through the inductor, the magnetic field surrounding the core begins to grow. As the induced current opposes the applied current, the applied current cannot increase further, causing the core to become saturated with magnetic flux. When the current is suddenly removed, the magnetic field collapses and the induced current takes the opposite direction. This causes the inductor to store the energy in the form of a magnetic field, and thus the inductor acts as a reservoir of energy.

Conclusion

The AISC-1812H-4R7N-T is a fixed inductor with a wide range of uses. It is suitable for audio applications to reduce interference, as well as in instrumentation and DC-DC converter applications. It operates through the principle of inductive reactance which is caused by an induced current in the windings, and it can also be used to store energy in the form of a magnetic field.

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