Semsa Elektronik Ltd.
Manufacturer of air core coils, transformers and inductors built on toroidal, EI laminated, and ferrite cores as well as current transformers.
http://www.semsa.com.tr

Trafomatic
Trafomatic - production of toroidal transformers: push-pull triode, single - ended, ultralinear and pentode power tube configurations.
http://www.trafomatic.com/

Quality Transformer Corporation
Design and manufacture single & three phase transformers, custom transformers, chokes, inductors, amplifiers and toroidal transformers.
http://www.qtran.com/

Nuvotem Talema
Superior Toroidal Transformers from Nuvotem Talema, Worldwide design and manufacture of toroidal transformers, toroidal chokes, toroidal inductors, and all toroidal magnetic components. Contact info@nuvotem.com
http://www.nuvotem.com

Shin Iang Toroidal Transformer Co, Ltd.
We are a leading Toroidal Transformers and Automatic Resettable Current Regulator manufacturer specialized in Toroidal Transformers, Automatic Resettable Current Regulator, Hi-End Amplifier Toroidal Transformers, Power Adapter, Power Transformers, Pa Output Toroidal Transformers, Electrical Machinery, Toroidal Transformer manufacturer, , and Power Adapter manufacturer .
http://www.e-transformer.com.tw/

Italtras
Produzione di trasformatori a giorno, resinati da CS e basso profilo con marchio ENEC, trasformatori toroidali marchio cURus (UL+CSA), trasformatori in ferrite, trifase
http://www.italtras.com

Talema Electronics Inc.
Manufacturer of toroidal inductors, transformers and toroidal engineering kits. Online line card and electrical and mechanical specifications.
http://www.talema.com/

Cortec Enterprises
A US electronics manufacturer specializing in toroidal power products. Specializes in isolation transformers, autotransformers, toroidal chokes and inductors.
http://www.toroids.com

Amveco - Toroidal Power Products
Highest quality toroids, a full line of toroidal transformer products and great service help make your designs easier and more competitive.
http://www.amveco.com

Toroid Corporation
Toroidal transformers, power transformers, medical isolation transformers, inductors and chokes for medical, industrial and commercial applications.
http://www.toroid.com