CD75NP-330KC Inductors, Coils, Chokes

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Fixed Inductors

Fixed inductors are electronic components whose function is to "oppose" a variation of current in a given circuit, whether direct or alternating. Inductors usually consist of an inductive coil wound on some kind of magnetic core, although there are also inductors with printed circuit boards, which do not contain a magnetic core. The fixed inductor CD75NP-330KC is an inductor with an iron powder core constructed of Ni-Zn ferrite and a wire wound on it.

Application field

The CD75NP-330KC fixed inductor is used in various circuits. Below are some application fields in which it is commonly used:

• Filters: Inductors are a key component in various kinds of filters, such as power supply and signal filtering.
• Voltage transformers: The inductor has multiple applications in the field of voltage transformers, such as for isolation, Voltage control, and taking voltage variations.
• Radio frequency amplifiers and receivers: Inductors are used in the construction of amplifiers, oscillators and receivers.
• Sparks lines: Inductors are currently used in various contacts and in various sparks lines.
• Motors and generators: Inductors are regularly present in motors and generators for the purpose of avoiding sparks and high-energy distribution.

Working principle

An inductor is an electric component in which, the passage of current through it produces a magnetic field. This electromagnetic field opposes any variation of the current in such a way that any interruption or reduction of its current produces a surge in voltage whose value is proportionate to the incipient current and to the speed of the change. Similarly, any weakening or interruption of the voltage rigorously produces a sudden increase in the current.

The EMF (electromotive force) or counter-electromotive force produced is expressed as: EMF = - L (dI / dT), where L is the inductance, which depends on the inductance coefficient and the calculated area of the coil (L = μm.A), m is the number of turns of the coil, μ is the magnetic coefficient or permeability of the material and I is the current which passes through it.

In the case of the fixed inductor CD75NP-330KC, the inductance is 330 mH (milli Henries). This value is very large for a fixed inductor, which makes it suitable for use in filters and provdes electrical noise suppression.

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