ELJ-QF4N3ZF Inductors, Coils, Chokes

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Fixed inductors are electrical components used to store energy in an electromagnetic field. They are designed to have a specific amount of inductance, and they can be used in a variety of applications in both high-frequency and low-frequency circuits. One type of fixed inductor is the ELJ-QF4N3ZF. In this article, we will discuss the application field and working principle of the ELJ-QF4N3ZF.

The ELJ-QF4N3ZF is a coil of wire used as a component in electrical circuits. It is often used in applications such as current limiters, filters, and active antennas. The inductance of the coil is the key feature which makes it suitable for such applications. The inductance of this type of fixed inductor is 4.7mH and it has a DC resistance of 1.2 ohms. With its size of 1/2" diameter and 1.25" length, it is easy to mount and use in circuits.

Fixed inductors are often used in filter circuits due to their ability to reduce the frequency of specific signals. This is done by increasing the impedance of the circuit at specific frequencies. The ELJ-QF4N3ZF is suitable for this application due to its relatively high inductance. It is also used in active antennas to reduce the antenna noise by bringing the tuning frequency down. This reduces the amount of interference that can be caused by nearby powerful signals.

The working principle of the ELJ-QF4N3ZF is based on Faraday\'s law of induction, which states that when a changing current flows through a coil, it induces an electromotive force. This force is proportional to the rate of change of the current. This forms the basis for the behavior of fixed inductors when they are connected to a circuit. By controlling the amount of current in the coil, the inductance or resistance of the coil can be controlled accordingly. When a current is applied, the coil produces a magnetic field, which induces an opposing electromotive force in the circuit. This opposes the current, thus creating an inductive reactance which, depending on the size of the inductive reactance, can affect the current in the circuit.

Apart from filter and antenna applications, the ELJ-QF4N3ZF can also be used in isolating circuits. It can be used to increase isolation between two circuits, reducing the amount of interference that can be caused by a current in one circuit affecting the other. It can also be used in battery-powered circuits to reduce the current drawn from the battery, and in power supplies to reduce the voltage ripple.

The ELJ-QF4N3ZF is a versatile and reliable fixed inductor which can be used in a large variety of applications. Its specific feature of high inductance make it suitable for filter circuits, active antennas, isolating circuits, and various other applications. By properly controlling the current flowing through the coil, the inductance and/or resistance of the coil can be adjusted to meet the requirements of the specific application. The working principle of the ELJ-QF4N3ZF is based on Faraday\'s law of induction, which states that a changing current induces an opposing electromotive force. This creates an inductive reactance in the circuit, which can be adjusted to achieve the desired results.

The specific data is subject to PDF, and the above content is for reference