Communication Coil, Inc. - Schiller Park, IL
Manufacturer, Custom Manufacturer
Manufacturer of custom toroidal coils; pi-wound, airwound, shielded, variable, non-magnetic. LC filters, chokes, inductors, baluns, RF & power transformers for medical, military, airborne, marine, instrumentation, industrial & wireless communications.
www.communicationcoil.com/coils.html

V-TECH Manufacturing Solutions LLC - Fishers, IN (Serving Illinois)
Custom Manufacturer
Custom manufacturer of electronic components including common mode, surface mount & toroidal coils. Other electronic components such as power transformers, current transformers, inductors & multi-phase electronic components are also fabricated. Capabilities include designing, rapid prototyping, contract manufacturing, project management & customer relationship management. Electronic components are FDA approved, RoHS compliant & CSA®, CUL®, ITAR, IPC, TUV & UL® standards certified.
www.v-techmfgsolutions.com

Actown Electrocoil Inc. - Spring Grove, IL
Manufacturer
Manufacturer of bobbin wound & toroidal electric coils.

V&F Transformer - Bartlett Road Bartlett, IL
Manufacturer, Custom Manufacturer
Manufacturers of a complete line of custom & semi-custom transformers, assemblies & resettable protection devices to meet a variety of UL, CSA or VDE requirements. Toroidal transformer coils.

Magnetic Coil Manufacturing Co., Inc. - Wood Dale, IL
Manufacturer
Manufacturer of electric, induction, magnetic, solenoid, torodal & transformer coils.

The Forest Electric Co. - Melrose Park, IL
Manufacturer, Custom Manufacturer
Specializing In Toroidal Coils, Forest Electric Company Manufactures All Standard & Customized Transformers, Magnetic Components & Assemblies. ISO 9000 Standards

Cymatics, Inc. - Naperville, IL
Manufacturer
Current Sensors, Controls & Transformers

GSG Industries - Robinson, IL
Manufacturer, Service Company
High Voltage Flyback Transformers & Degaussing Coils

Precision Components, Inc. - Carol Stream, IL
Manufacturer
Manufacturer of toroidal & bobbin coils.

Transformer Manufacturers, Inc. - Norridge, IL
Manufacturer
Manufacturer Of Chokes, Inductors & Toroids

Coils Inc. - Huntley, IL
Manufacturer
Manufacturer of sensors, battery chargers, electric coils.