ER1025-69JM

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Fixed inductors, depending on their design, can either be used to stabilize and adjust current flow, block direct current, or both. The ER1025-69JM fixed inductor is a small, axial-style inductor, which can be used in a variety of applications. This article will cover the application field and working principle of the ER1025-69JM.

Applications

The ER1025-69JM is well-suited for systems that require power supply protection and filtering from short pulse noise. This includes consumer electronics like DVD players, portable audio players, and other small embedded systems. It can also be used in high-end switching power supplies. Additionally, the ER1025-69JM can be used in noise reduction applications.

Physical Characteristics

The ER1025-69JM is a 9mm-long, 7mm-diameter, 4-watt, axial-style inductor. It is available in a wide range of inductance values, ranging from 4.7µH to 330µH, depending on the customer’s requirements. Its inductance and Q can also be adjusted within a specified range. The ER1025-69JM is constructed from a ferrite core and enameled copper wire which is wrapped around it.

Working Principle

At the heart of the ER1025-69JM\'s operation is Faraday’s law, which states that a voltage is induced in a coil of wire when the magnetic field around the coil changes. The ER1025-69JM functions by conducting electricity through a coil. As the current passes through the coil, it generates a magnetic field, which in turn induces a voltage. This process is repeated quickly and the resulting voltage signal is passed along until it reaches its destination.

The ER1025-69JM can be used to filter out high-frequency noise as well. When a high-frequency signal enters the inductor, the changing electromagnetic field generated by the current passing through it produces a voltage. However, the voltage generated by the inductor only has a low-frequency response. Consequently, the high-frequency signals are blocked, while the lower-frequency signals pass through unaltered.

The ER1025-69JM is also used to reduce the surge current of a switch-mode power supply. When the switch mode power supply is triggered on, the coil shortens the time required for the current to be fully activated by limiting the rise time, resulting in a smaller surge current.

Conclusion

The ER1025-69JM fixed inductor is a versatile component that can be used in a variety of applications. It can be used for power supply protection and filtering of high-frequency noise, as well as for reducing the surge current of a switch-mode power supply. Its small size and wide range of inductance values make it suitable for a variety of uses, including consumer electronics and embedded systems.

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