- A & B Electronics Co.
- Manufacturing a variety of electronic components including magnetic relay coils which create electronic sledge hammers that rap precipitator plates to dislodge particulate collected from the air in the electrostatic precipitator process.
- Ad-Vance Magnetics Inc.
- Manufactures custom fabricated magnetic shields and offers magnetic shielding alloys in sheets and foils.
- Amidon Associates
- Manufacturing ferrite toroids, iron powder toroids, ferrite beads, split cores, cable clamp-ons, balun cores, W2FMI baluns and ununs, inductive components for emi suppression and rfi suppresion, power supplies, ham radio.
- Associated Components Technology
- Manufacturer of electronic inductors, emi suppressors, transformers, coils and chokes, all available in surface mount and thru-hole package styles.
- BH Electronics
- Designs and manufactures custom and standard transformers, inductors, filters, baluns, chokes, assemblies and related devices.
- Bicron Electronics Company, Inc.
- Design and manufacture of electro–magnetic and electro–mechanical products.
- Central Technologies
- Specializing in inductors, chokes, coils, beads, toroids, dc/dc converters, transformers, filters, antennas, resistors, and telecommunications, xDSL & LAN components.
- Communication Coil, Inc.
- Designs and produces custom, high reliability filter networks, RF coils, chokes, inductors, baluns, toroids and power magnetics for communications and signal processing equipment.
- Custom Coils
- Manufactures specialty coils, coil assemblies, solenoids, and a variety of electro-magnetic and inductive devices.
- General Linear Systems
- Manufacturer of small to medium size magnetic components, inductors, toroid's, solenoids, current sensors, common mode chokes, custom coils and air coils.
- National Electric Coil
- Independent manufacturer of high-voltage generator and motor windings.
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