Petra
Despre noi, Transformatoare toroidale de cea mai buna calitate oferite de Petra Toroid.
http://www.petra-toroid.ro

Johnson Electric Coil
Designer and manufacturer of custom transformers and inductors since 1934.
http://www.johnsoncoil.com

Botter Elettrotecnica
Manufacturer of transformers, autotransformers, inductors, inductances and power supply units. From Italy.
http://www.botter.com/

Magnefield Transformers
Maker of general-purpose and custom transformers, chokes and autotransformers.. On-line configurator also provides quotes.
http://www.magnefield.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

TEMCo
TEMCo Transformer Manufacturer sales - Standard and custom transformers manufactured to spec. TEMCo has experience manufacturing and selling quality electrical products since 1968. TEMCo manufactures a variety of electrical power transformers: 1-phase transformers and 3-phase transformers including step-up transformers and step-down transformers, auto transformers and control transformers k-factor, etc. Transformer manufacturer for almost 40 years. Sale on now.
http://www.temcotransformer.com

Nanap And Company
manufacturers of transformers, line reactors for a.c. and d.c. drives, special purpose h.v. voltage transformers, ht transformers, power transformer, single and three phase power transformers, control transformers, auto transformers, vacuum impregnated transformers, chokes, coils, cvt stabilizers, transformer chokes, ultra isolation transformer, constant voltage transformer, ferrite core transformer, inverters, ups systems, stabilisers, oscilloscopes, power supplies, control panels, microprocessor based control systems, general instruments, stockiest for aplab instrument, india
http://www.nanaptransformers.com

Lenco Electronics, Inc.
Power transformers: Lenco specializes in a wide variety of custom transformers from isolation transformers, Ferro resonant transformers, Autotransformers, Three phase transformers, and Inductors. Lenco also offers the option of NEMA 1 enclosures with 7 available sizes, which are designed for three phase transformers, however modifications can be made to install single-phase transformers as well.
http://www.lenco-elect.com

D&M's High Voltage, Inc.
Manufacture specialty single and three phase transformers - high current, high voltage, zig-zag, phase shifting, autotransformers, isolation, rectifier, inductors, reactors, saturable reactors, and AC/DC power supplies.
http://www.dmshv.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