Custom Transformers and Custom Magnetic Products

Since 1949, Transformer Manufacturers, Inc.’s (TMI) expertise in manufacturing quality custom transformers and magnetic products has enabled us to solve problems for our customers while meeting or exceeding their specifications and requirements.

We manufacture custom-designed transformers for a wide range of industries including:

Audio Transformers
Power Transformers (isolation transformers and autotransformers)
Choke Transformers
Toroid Transformers

Coil types include bobbin, layered, precision wound and toroidal, in single or 3 phase.

Transformer manufacturing is our core business and all products are proudly made in America. TMI serves the global market from our facilities centrally located in the Chicago transportation hub.

Rely upon Transformer Manufacturer Inc. as your magnetics manufacturing partner for:

Value engineering
Prototyping
Quality centered manufacturing
Value-added manufacturing services
Just-in-time and other delivery options
High quality products
Custom solutions