An electromagnetic coil is produced by winding an electrical conductor, such as wire, into the shape of a coil, spiral, or helix. The design of the coil is based on fulfilling specific purposes, taking into account parameters like inductance, resistance, and the desired strength of the magnetic field. These factors greatly influence the coil winding design.
Electromagnetic coils find application in devices where electric currents interact with magnetic fields, such as inductors, electromagnets, transformers, and sensor coils. Either an electric current is passed through the wire of the coil to generate a magnetic field, or an external time-varying magnetic field is passed through the coil to generate a current in the conductor.
Inside electromagnetic coils, there is a magnetic core made of a magnetic material, which is intended to increase the magnetic field. The core is not directly linked to the coil. As the current passes through the coil, it magnetizes the material, and the magnetized material’s field adds to the field produced by the wire.
Types of Winding. Brief Characteristic and Scope of Application
According to the design and technological features, the following types of winding can be distinguished: cylindrical, disk, continuous, twisted, and screw-type (helical) windings.
The choice of winding type depends on the number of turns, size, cross-sectional shape and number of parallel wires, as well as cooling method, transformer power and other factors. When choosing the type of winding, the requirements for it, as well as the technological feasibility of its implementation should be taken into consideration.
To learn more about Benatav’s coil winding technology and its applications, read our White Paper.
Micro Coil Winding
Winding regular-sized coils can be done serially, but winding micro coils requires specialized equipment. Benatav has developed state-of-the-art methods and equipment that enable the winding of micro coils to a degree not previously achievable.
Manufacturing a micro coil with up to 2000 turns requires significantly reducing the wire’s thickness. Benatav is one of the few companies in the world working with extremely fine wires. Using custom micro-machining technologies, the company can manufacture coils with over 1000 windings that are smaller than the head of a pin.
Benatav’s core competency lies in engineering design according to customer requirements. With over 30 years of engineering experience, Benatav’s developers collaborate with the customer’s engineers from the early stages to ensure precise and professional design that meets all engineering requirements while adhering to the highest quality standards and ensuring maximum manufacturability. The design process involves an interactive customer-provider approach, including joint tests and experiments in the Benatav labs, until a prototype design is finalized.