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

    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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  • Bristol, CT

    Established in 1973, Classic Coil Company is a Contract Manufacturer of electronic coils. We manufacture coils for a variety of industries; winding wire gauges from 4-58 AWG. We are ISO 9001-2015 certified, ITAR registered and DFARS Compliant. Our Engineering services allow us to assist with design, reduce cost, and increase efficiency in production. Call or visit our website to learn more about our capabilities.

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  • Alpha, NJ

    Since 1962, Torelco LLC has been a supplier of electric coils and transformers of superior quality. We offer custom coils, solenoid coils, ferrite core coils & toroid wound coils to serve a range of industries. Markets served include medical, military, electronics, and industrial. When you work with us, our promise is to build to the exact specifications and meet the custom needs of our customers.

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  • North Fort Myers, FL

    Check out what’s new online at Precision Econowind, manufacturer of the highest quality custom coils at reasonable prices, with on time delivery. Serving the coil industry for over 30 years, we’re experienced with producing loudspeaker & medical industry coils, coils wound on customers’ bobbins/tooling; freestanding, flat wire, edge wound, square, rectangle & shaped coils. Submit your specs today!

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  • Winsted, CT

    At Dufrane Technologies, we take pride in our extensive range of electric coils. Our comprehensive product portfolio encompasses a wide variety of coil types, including solenoid coils, electromagnet coils, induction coils, and more. Whether you require custom-made coils or standard options, we have the expertise and resources to fulfill your specifications with precision.

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Choke Coils Industry 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. Choke coils are passive components, depending on the property of self-inductance, so they operate based on the generation of an electromotive force (EMF) in a circuit that results from the changing of the current in that circuit.

Quick links to Choke Coils Information

Applications of Choke Coils

Choke coils are electrical coils that work to block common-mode currents while passing differential, or equal but opposite, currents.

Choke coils can be utilized in a broad range of applications, including:

Power Generation
To protect power lines from electromagnetic interference (EMI) or radio frequency interference (RFI).
For use in engine applications.
To protect electrical devices from EMI and RFI that could cause them to malfunction.
For use in such equipment as furnaces, air conditioners, and blowers.

Choke Coil Design and Function

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, they 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 Informational Video