Electrical Coils

A reliable source for Electric Coil information and leading Electric Coil Companies & Manufacturers.

In addition to transmitting heat, sound or electricity, electrical coils are required to perform several different functions. Read Moreā€¦

Electrical Coils Electrical coils, an alternative name for electric coils, consist of a series of loops manufactured from conductive metallic wire and wound around a ferromagnetic core.

Leading Manufacturers

Sag Harbor, NY  |  800-724-5952

We are proud of the craftsmanship of our engineers. All of our products are made right here in the United States and we promise that these items are created from high quality resources. Our electrical coils are unique and efficient.

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Sag Harbor Industries, Inc. $$$

Antigo, WI  |  800-826-9741

Johnson Electric Coil Company is a family owned manufacturer that specializes in custom transformers, coils and inductors. From three phase isolation transformers to single phase inductors and chokes, we carefully design our products to meet your exact specifications.

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Johnson Electric Coil Company $$$

Bristol, CT  |  860-584-0927

We are an ISO 9001:2015 certified company which is internationally known for manufacturing high quality electromagnetic-coils. It is our goal to provide quality products, a commitment to speedy delivery, and competitive pricing. We understand that every application is unique, so we encourage you to contact us to discuss your specific requirements. Call us at 1-860-584-0927 and find out what our 50+ years of experience can do for you.

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Quality Coils, Inc. $$$

North Manchester, IN  |  260-982-8508

At Custom Magnetics, we manufacture transformers and coils, custom designed, for electrical and electronics industries. Our products often serve applications such as audio amplifiers, intercoms, power supplies, transducers, transportation, power generation, etc. Many types of transformers are produced including laminated, toroidal, ferrite cores of all shapes and sizes, and R-Core. Call today!

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Custom Magnetics, Inc. $$$

McAllen, TX  |  888-664-9495

Industrial Coils, LLC is a leading manufacturer that specializes in high quality custom solenoid coils wound to customer's specifications From three phase isolation transformers to single phase inductors and chokes, we carefully design our products to meet your exact specifications. Our experienced engineers are available to assist during every step of the process. Let us make great parts for you!

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Industrial Coils, LLC. $$$

Marlton, NJ  |  800-822-9190

Repco Inc. was founded in 1976. Our name stands for Replacement Electrical Parts Co. The products currently sold by Repco are electrical contacts and coils for industrial control and carbon brushes for industrial motors. The business is located approximately 12 miles east of the city of Philadelphia in Marlton, NJ.

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Repco Inc. $$$
placeholder image Sag Harbor Industries, Inc. Johnson Electric Coil Company Quality Coils, Inc. Custom Magnetics, Inc. Industrial Coils, LLC. Repco Inc.

The many attributes of electrical coils enable them to meet a wide range of application requirements for industries including: industrial manufacturing, which utilizes many molded coils or encapsulated coils for protection against corrosive environments, and electrical solenoid coils for remote equipment; automotive, in which induction coils, such as ignition coils, are essential for the operation of internal combustion engines; electronics, for equipment and devices such as electric transformers, radio transmitters, cameras and strobe lights; medical, for use in imaging and therapy equipment; and power generation, which often use high voltage electrical coils for supplying power to warehouses and other industrial, commercial and residential buildings. In addition to transmitting heat, sound or electricity, electrical coils are required to perform several different functions.

In order to better fit the specifications of the broad spectrum of applications they are used in, there is a multitude of electrical coil types that differentiate in terms of wire gauges, coil diameter wire lengths and core materials. All of the coil specifications can be customized to meet diverse requirements.

Electrical Coil Assembly Electrical Coil Assembly - Sag Harbor Industries, Inc.

The basic construction of an electrical coil is typically that of its core, a primary coil and a secondary coil. However, this simple design can quickly become complicated with the addition of more coils, which are also referred to as windings. A winding is defined as a complete coil assembly with taps that are used to connect to current flow either from an input or to an output.

While just one primary winding can be used at times, most applications require the addition of secondary winding, and some can even require tertiary windings (which are known as tickler coils). An electric transformer, for example, is an electrical coil that has a primary and a secondary winding, enabling it to transfer electrical energy from one electric circuit to another electric circuit without any moving parts. Not only does the number of windings affect the function of the electrical coil, but the coil taps can as well.

Coil taps are defined as points in the wire coil that consists of an exposed conductive patch and mostly differ in size. For example, when an electrical coil has a large diameter, the amount of self induction is similarly large and the current can become problematic. It will try and flow on the inside of the wire instead of on the outside.

Another example would be that of multi-layered electrical coils, which have issues with interlayer capacitance, defined as an electrical phenomenon whereby an electric charge is stored, requiring a spiral-shaped coil.

Electrical Coils Informational Video