toroid iso

Phone Number: 800-867-3526




Toroidal transformers are insulated, ring-shaped coils that operate within electronic circuits. Transformers change an alternating current voltage from one level to the next without the need for moving parts. Toroidal transformers have advantages over other shaped transformers. A toroid is more efficient than a traditional transformer, and the toroidal transformer takes up less space.


We proudly offer a wide range of toroid winding services. Call us today for a full-list of capabilities. We are known for:
  • Building custom toroids
  • Reverse engineering toroids
  • Repairing old and broken toroids
  • Wire wrapping/winding
  • Flex lead attachments
  • Tapping
  • Varnish/encapsulation
  • Vacuum/impregnate
  • Potted toroids

Applications and Industries

A toroidal transformer is used when working with electricity that has a low frequency. A toroid functions as an inductor, which boosts frequencies to appropriate levels. Toroidal transformers are frequently used for many different applications that include:
  • Medical
  • Military
  • Electronics
  • Industrial
  • And more


We work with all materials that are available. Below is a list of materials we commonly work with, but we can work with more than what is listed.

  • Ferrite
  • MPP
  • Amorphous
  • Sendust
  • Powdered Iron
  • Nickel Alloys
  • Silicon Steel


We partner with each of our customers to meet their individual needs. We want to work with you.
  • Toroids built from your specifications
  • Quick turn-around time
  • No limits for the size of order (one or more)

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