2890-40H

Fixed Inductors

A fixed inductor, sometimes referred to as a choke, is a device used to store energy in a magnetic field. It is a passive two-terminal electrical component consisting of a coil of wire. A fixed inductor is most commonly used in filtering, impedance matching, and noise suppression applications. In addition, fixed inductors can be used as components in resonant circuits and in the formation of oscillators.

2890-40H application field and working principle

The 2890-40H inductor is a compact fixed choke. It is a high-power inductor designed for use in a number of different types of applications. It is a low loss and ferrite inductor that has a maximum DCR of 0.15 ohms. The inductor can handle currents up to 16 Amps and can be used in both DC and AC circuits.

The working principle of the 2890-40H fixed inductor is based on the behavior of electric current flowing through a conductor. When current passes through a wire, a magnetic field is generated. The greater the current, the stronger the magnetic field will be. The generation of this magnetic field creates a back force, known as a counter-emf or inductance, which opposes the flow of current through the inductor.

When the inductor is connected to a constant DC voltage, a certain amount of current will flow through the inductor. This current produces a steady magnetic field, which produces a back emf that will oppose further increases in current. This opposition to further increases in current is known as inductive reactance and is measured in ohms. The inductance of an inductor is what gives it the properties of storing energy in a magnetic field.

When the inductor is connected to an AC voltage, the current will vary with the changing voltage, producing a changing magnetic field which acts as an AC filter. The inductor will attenuate certain frequencies while allowing others to pass through. This makes the 2890-40H ideal for use as an AC filter in a variety of applications.

The 2890-40H is a compact, high-power inductor that is suitable for a wide range of applications. It is designed for use in high-power circuits requiring both DC and AC filtering, such as LED arrays, high-frequency sound reinforcement systems, switching power supplies, and audio amplifiers. The inductor can also be used as a component in resonant and oscillator circuits.