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Choke Coil Manufacturers and Suppliers

IQS Directory is a top industrial directory listing of leading industrial choke coil manufacturers and suppliers. Access our comprehensive index to review and source choke coil manufacturers with preview ads and detailed product descriptions. These choke coil companies can design, engineer and manufacture choke coils to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these choke coil manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for a manufacturer of solid state chokes, choke coil inductors, electric choke coils.

  • Sag Harbor, NY 800-724-5952

    With multiple U.S. manufacturing locations, Sag Harbor Industries is equipped with state-of-the-art automated and semi-automated equipment that are geared for both high volume production and shorts runs in the most economical and efficient methods. When it comes to high quality choke coils, contact the company you can depend on. Call Sag Harbor today to get started.

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  • Antigo, WI 800-826-9741

    We used refined techniques to create the best choke coils. These items are designed by our energetic staff that works hard to manufacture highly reliable products. Our superior items are convenient to install and we create these units with extreme accuracy. If you want high quality choke coils then you have come to the right place. We successfully manufacture these critical systems. Please visit our website today for more information!

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  • 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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  • Ormond Beach, FL 386-671-7406

    Where others have failed, Standard Technology overcomes the most difficult design challenges for custom electric coils, solenoids, sensors and electromagnets. With years of experience, full engineering consulting services and in-house machine capabilities, we meet clients’ exact needs, from AC/DC coils to coil assemblies. We have produced encapsulated and over-molded coils for many industries.

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  • Binghamton, NY 800-224-4477

    Endicott Coil Company is an expert manufacturer of an impressive range of coils. Created in wire gages of 4 AWG – 50 AWG with insulation capacities up to 220 degrees, our coil assortment consists of molded coils, custom coils, self-supported coils, encapsulated coils, inductors & ferrite core coils. As a leading electric coil manufacturer, ECC’s products are used in a wide range of applications.

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  • Yardville, NJ 609-585-6600

    We are a dedicated manufacturer of electric coils and you will not be upset with the capabilities of our teams. All of our high performance devices are competitively priced and we can design any coil to match your unique requirements. We are a focused supplier for OEM, military, precipitator and air pollution control industries. Please give one of our representatives a call today to learn more information!

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businessIndustry Information

Choke Coils

Choke coils, also known as choking coils, are low-resistance electrical coils with high inductance that are used to block high-frequency alternating currents (AC) of electricity while allowing low-frequency direct currents (DC) to pass through. As passive components depending on the property of self-inductance, choke coils operate based on the generation of an electromotive force (EMF) in a circuit that results from the changing of the current in that circuit.

Choke coils are electrical coils that work to block common-mode currents while passing differential, or equal but opposite, currents. Although they provide a very specific function, choke coils can be utilized in a broad range of applications including: power generation, in order to protect power lines from electromagnetic interference (EMI) or radio frequency interference (RFI); automotive, for use in engine applications; electronics, to protect electrical devices from EMI and RFI that could cause them to malfunction; and HVAC, for use in equipment such as furnaces, air conditioners and blowers. There are several different types of choke coils and one of the main differences in construction between the types is the core material, which can include iron powder, ferromagnetic, non-magnetic and ferrite. What metal is chosen depends on the conductivity level desired.


Often used in EMI and RFI interference protection applications, there are two main categories of choke coils utilized in radio circuits: audio frequency coils (A.F. chokes) and solid-state chokes (SSC), which are also known as electronic ballast or electronic chokes. A.F. chokes are, as the name suggests, designed to be used with audio frequency applications, and as a result have a core constructed from ferromagnetic iron that allows for increased induction capabilities, much like the induction coil. Within A.F. chokes, there can be other categorizations based on how high of a frequency the choke coil is able to function with. For moderately high frequencies, A.F. chokes typically have a core constructed from iron powder or ferrite, while for very high frequencies A.F. chokes most often have a core constructed from non-magnetic cores. The non-magnetic cores could be so simple as to only require air surrounding the coil. When it comes to SSC, they are capable of operating with even higher frequencies than A.F. chokes. In addition, SSC are capable of reducing the high noise levels typically associated with higher frequencies. Additional types of choke coils include medium frequency (MF) radio chokes, high frequency (HF) radio chokes and very high frequency (VHF) chokes.

Choke Coils
Choke Coils
Choke Coils - Sag Harbor Industries, Inc.
Choke Coils - Sag Harbor Industries, Inc.



Choke Coils Informational Video