![]() One of the major challenges facing the mechanical designer of state-of-the-art devices is the need for miniaturization. The poles of an electromagnet can even be reversed by reversing the flow of electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the strength of the electric current that flows through it. To further concentrate the magnetic field, a core made of a magnetic material is placed inside the coil. Parameters such as inductance, resistance, and strength of the desired magnetic field greatly influence the design of coil windings. The shape and dimensions of a coil are designed to fulfill a particular purpose. The coil may be in the shape of a simple circle, a spiral, or a helix. To concentrate the magnetic field, the wire is wound into a coil with many turns of wire lying side by side. Either an electric current is passed through the wire of the coil to generate a magnetic field, or conversely, an external time-varying magnetic field is passed through the interior of the coil, generating a current in the conductor. ![]() When a current flows in a conductor it generates magnetic field lines of force around the conductor according to Ampere's law.Ĭoils are used in devices such as inductors, electromagnets, transformers, and sensors. Whether your project is in consumer electronics or laboratory research, custom electromagnetic coils made by Benatav provide the fundamental components needed for many applications. Electromagnetic coils are found in virtually every industry and in many applications. ![]()
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