8230-90

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Fixed inductors are commonly found in radio frequency circuits and in some switching power supplies. They are designed to store energy by creating a magnetic field produced by current flow through the inductor\'s coil. They are also known as "coils" and "chokes".

The 8230-90 application field and working principle of a fixed inductor is quite simple. It is an inductor that creates an electromagnetic field when voltage is applied across its terminals. The magnetic field causes current to be drawn from the terminals, which in turn creates an opposing electromagnetic field that resists the flow of current.

The 8230-90 application field of a fixed inductor includes energy storage, interface protection, filtering, and electromagnetic interference (EMI) shielding. In particular, fixed inductors are commonly used in radio frequency circuit applications where the inductor must store energy over a period of time and then be able to couple that energy quickly back into the circuit. In switching power supplies, for example, they are used to generate fast, large pulse currents.

The working principle of a fixed inductor is relatively straightforward. When no voltage is applied across the terminals, it acts like an open circuit. When a voltage is applied, current flows from one terminal to the other and creates an electromagnetic field. The current flow creates a magnetic field that inducts (induces) electrons in the surrounding area (this is what is known as electromagnetic induction). The force of the induced electrons counters the force of the initial current, and this is what resists the flow of current. This field can be used to store energy and the inductance is the measure of how much energy can be stored.

For example, in a radio frequency circuit, the inductor is used to store energy and couple it back into the circuit during peak current points. The pulses of current are utilized to create the desired waveform, while the inductor helps maintain the peak current level without excessive distortion. This is why inductors are commonly found in RF circuits, as they ensure a consistent, high power waveform with minimal distortion.

Fixed inductors are also commonly used in power supply filtering applications, where they are used to filter out unwanted power fluctuations. The inductor helps reduce EMI and helps ensure that power is delivered to the circuit without distortion or interference. In addition, they are widely used in interface protection applications where they help protect sensitive components from currents that could damage them.

In short, fixed inductors are an essential component of most electronic circuits. Their ability to store energy and couple it back quickly makes them ideal for radio frequency applications, and their ability to reduce EMI makes them ideal for power supply filtering and protection applications. As such, understanding the 8230-90 application field and working principle of a fixed inductor is essential for anyone working with electronics.

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