The Basics of Coil Winding

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Coil winding involves wrapping a wire around a cylindrical object in a spiral-like shape to produce a standalone coil or a coil on a toroid, bobbin, or other type of center support. The coil may be made of one or more layers of wires depending on its intended application. The following factors influence the type […]

Solenoids: Working Principle,
Types & Applications

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Types & Applications

A solenoid is a variety of electromagnet consisting of a copper wire coil wound tightly into a helix, an iron or steel housing, and a mobile plunger made of magnetic material. When an electric current passes through the coil, the solenoid produces a magnetic field and converts that magnetic energy into mechanical motion. Essentially, a […]

A Guide to Magnetic Particle Imaging (MPI)

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Medical professionals rely on access to high-quality preclinical imaging tools to monitor healthy and diseased tissue, make diagnoses, and develop treatment plans. Three tomographic preclinical imaging options have been available over the last few decades: positron-emission tomography (PET), computed tomography (CT), and magnetic resonance imaging (MRI). Each has its own drawbacks, from using ionizing radiation […]

Electromagnets in the Aerospace
Industry: Thrusters

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Industry: Thrusters

Electromagnetic propulsion (EMP) requires two primary components: an electromagnet to generate the magnetic field and a propulsion component. EMP uses a current from the magnetic field to accelerate the object. Through Lorenz Force, the electrified conductor encounters a force in a perpendicular direction to the magnetic field and the current. If a liquid or gas […]

Vacuum Casting

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Vacuum casting of wire coils removes air from the material surrounding the windings, which results in better thermal control of the component. This process also creates specific physical geometries that enhance the structural integrity of coils and allow for better compliance with space requirements. Vacuum casting is an effective process to protect coils from humidity […]

Multi-coil Configurations and Their Effects

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With almost unlimited possible multi-coil configurations, it’s important to understand how standard multi-coil configurations interact when selecting custom coil components. While the electromagnetic properties of simpler multi-coil devices are easy to predict and control, managing more complex configurations requires a thorough understanding of how fields of basic multi-coil configurations interact. Types of Multi-coil Configurations Electrical […]

How Do Electromagnetic Coils Work?

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Custom Coils Inc. designs and manufactures custom specialty coils for a variety of industries and applications. For even the most challenging projects, our experts can deliver high-quality design conceptualization, prototype development, testing, and production. This page will explain how electromagnetic coils work, their different types and applications, and important design considerations when creating custom solutions. […]

What are Electromagnetic Coils?

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Coils are helically wound electrical wires that generate electromagnetic fields when exposed to an electrical current. They are vital parts of various devices, including electromagnets, solenoids, and inductors. A range of applications, from antennas to electric motors, rely on electromagnetic field generation from coils. Coils deliver many benefits and can be made from a diverse […]

Magnetic Levitation

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Also known as magnetic suspension, magnetic levitation (maglev) occurs when magnetic fields suspend an object in the air, with magnetic force overcoming gravitational force to keep it aloft. The idea of magnetic levitation has been around since at least 1904 when Robert Goddard, an American inventor and professor, authored a paper based on magnetic levitation […]

Electrical Coil Design: Thermal Challenges

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Electric coils conduct energy and allow for inductance to counter or control the flow of current. The coils are constructed from wires (made from conductive materials like copper) which may be wound around a cylinder, disk, or toroid-shaped ferromagnetic core or as a self-supported structure (wire only). While electric coils operate based on simple principles, […]