Small Transformers. Custom Transformers. Custom Electromagnetics. Power Transformers. Current Transformers. Inductors. Reactors. Chokes. Toroid Windings. Custom Windings. Coils. Design. Build to Print. Reverse Engineering. Contract Manufacturing. Prototype Transformers.

The team at Dufrane Technologies LLC has over 150 years of combined experience in designing, engineering, and manufacturing Custom Electromagnetic Devices, Electromagnetic Windings, Small Custom Transformers, Power Transformers, Current Transformers, Toroids/Toroidal Transformers, Bobbins, Bobbin Windings and other critical power management components to meet very specific customer needs.

Dufrane Technologies LLC (DT LLC) was established more than 30 years ago as BOMAG. Dufrane Technologies has a long record of designing, engineering, and manufacturing high quality value-added critical components that are vital for safe operation, hazardous environments for the most exacting clients including

  • Bombardier
  • Alstom
  • General Dynamics
  • Jacobs Vehicle Systems,
  • Otis Elevator,
  • Boeing,
  • Electric Boat
  • US Department of Defense,
  • Westinghouse

Dufrane Technologies LLC has an 80,000+ Square Foot facility which can accommodate equipment and personnel needed to effectively perform large contract manufacturing jobs.

Dufrane Technologies division is one of the Dufrane Companies, including Dufrane Nuclear Shielding, Inc. Dufrane Construction, Dufrane Rail – there’s a full corporate profile available at

Dufrane Technologies is headquartered in Winsted, CT.