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Johnson Electric Coil Company

Custom Transformers, Autotransformers, Inductors and Chokes

We work with our customers in order to ensure that they are getting the products that they need, where they need them, when they need them. If you’re looking for a top of the line custom transformer solution, a standard electric transformer solution or a custom inductor solution, then look no further than Johnson Electric Coil Company, celebrating 82 years at the top of the industry.

We are a 5S Company using Lean Manufacturing Techniques.

  • CAD Supported Design Services
  • Prototyping
  • Manufacturing to Custom Specs
  • Comprehensive UL, CSA, CE & RoHS Compliance to all Domestic & International Standards

Johnson Electric Coil is a 5S Company using Lean Manufacturing Techniques

Three Phase Isolation Transformers

High quality, electric transformers up to 250kVA in a wide range of shapes and sizes. We do it all! These custom transformers are carefully designed to meet your needs from electrical performance and size to weight and price.

Three Phase Autotransformers

Our three phase autotransformers are the best custom transformers on the market with special voltage requirements and terminations that meet your installation needs. We build these custom transformers to meet your specifications.

Three Phase Inductors and Chokes

We do it all here at Johnson Electric Coil Company, which is why our three phase inductors and chokes are second to none on the market. Custom built to meet your needs, we can do it all!

Single Phase Isolation Transformers

Our dry-type single phase isolation transformers are manufactured to meet your unique needs. By offering custom transformers, we are able to meet a wide range of requirements. Our single phase isolation transformer capabilities go all the way up to 75KVA!

Single Phase Autotransformers

Committed to providing the best electric transformers on the market, Johnson Electric Coil Company offers premium single phase autotransformers for virtually any application. We do it all!

Single Phase Inductors and Chokes

When it comes to inductors and chokes, only the best is good enough for your application. So come to the best! Here at Johnson Electric Coil Company, we design and manufacture high quality, custom single phase inductors and chokes.

Toroidal Transformers

As a leading producer of toroidal transformers and other electric transformers, we have learned that offering custom solutions is the best way to provide high quality products to our customers.

Johnson Electric Coil Company provides complete design, engineering, and manufacturing services to supply our customers with the finest, most efficient, custom transformers and inductors. Our design and manufacturing capabilities are some of the broadest in the industry. We can fully support our customer’s safety agency requirements with expertise in both domestic and foreign agency requirements. In addition to our engineering and manufacturing services, we work with our customers to customize scheduling, packaging, shipping, billing, and communication practices to meet their unique inventory management, product handling, delivery, and customer service needs. Our goal is to provide a level of quality and service that enables our customers to be leaders in their markets. While we mainly sell in the US, our products are found all over the world as components in OEM equipment. We pride ourselves on being the only transformer company our customers need.

Johnson Electric Coil celebrating over 80 Years

“Unified - Unselfish - Single Minded
Outstanding Customer Service”