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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

    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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  • Lachine, QC

    Our objective is to provide every customer with the best customer service out there. Our electric coils are designed to be economic, efficient and clean. We also offer warehouse and space heaters in tubular, electric and ceramic heating configurations to suit your application. A resourceful sales team and knowledge base make WATTCO™ the one stop for all heating product needs.

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  • South Haven, MI

    South Haven Coil has been manufacturing superior quality electromagnetic products since 1957,all made 100% in the USA. We are one of the nation's leading quality electromagnet manufacturer's.Specializing in electromagnets, wire harnesses & termination, molded coil assemblies,potted coils, bobbin-wound coils, toroids,laminated & ferrite transformers.We strive to deliver dock-to-stock components, on time and within budget.

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  • Cleveland, OH

    Our factory direct choke coils are extremely affordable. These coils can be specialized with different encapsulation epoxies to meet your requirements involving: color, durometer, environment, insulation class, thermal and physical stock. If you are unsure what products are best to meet your needs then simply just give one of our representatives a call today and we can find a solution that fits within your budget!

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  • More Choke Coils Companies

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.