Toroidal transformers are the smallest-sized transformers in regards to both weight and volume, which works to the advantage of toroidal transformer manufacturers because they can be easily incorporated into any power source application that can accommodate its shape. Industries that benefit from toroid transformers include electronics, aerospace, musical instrument, private security, meteorology and transportation and many more. Read More…
Leading Manufacturers
Johnson Electric Coil Company
Antigo, WI | 800-826-9741We believe in offering the very best to all customers. We offer a full range of transformers, including electric transformers, current, and toroidal transformers. We will never let you walk out the door with a substandard product. If high quality is demanded, that is what we will offer. Let us help you today! Give us a call or visit us online to learn more.
Triad Magnetics
Perris, CA | 951-277-0757For over 50 years, Triad Magnetics has been designing & manufacturing electric transformers for a wide range of industries. In Triad’s standard product line, they have over 1,000 part numbers, which means you are most likely to find what you're looking for. Whether you need switchmode, wall plug-in, inductors or audio transformers, Triad Magnetics either has it in stock or they can custom design.
Pico Electronics, Inc.
Pelham, NY | 800-431-1064At Pico Electronics, we are a big name in small components. Our excellent customer service and support is a wonderful accompaniment to our quality electric transformers. We also have capabilities to provide custom transformers, power transformers, current transformers, isolation transformers, toroidal transformers and high voltage transformers. For more information, contact us today and tell us how we can fulfill your requirements.
Foster Transformer Company
Cincinnati, OH | 800-963-9799Since 1937, we have been specializing in the design and manufacture of custom ferrite transformers, chokes, toroids, inductors, pulse, RF, switching, power telephone balun and other specialties. Check out our website for more information on our full spectrum of products and services.
Nova Magnetics, Inc.
Garland, TX | 888-530-6682With the ability to produce either small or large quantity orders, Nova Magnetics is sure to have a custom transformer to meet your needs. Standard transformers include power transformers, electric transformers, dry type transformers, isolation transformers and distribution transformers.
Lenco Electronics, Inc.
McHenry, IL | 815-344-2900Lenco Electronics, Inc. specializes in a wide variety of custom electric transformers. Lenco’s success has not come about by accident, but by providing its customers with high-quality products. When you do business with Lenco, you can do it with confidence that your product was designed and engineered by professionals. Your special application is our specialty, so call Lenco today!
Toroidal Transformers - MCI Transformer CorporationUsed as transformers in main power supplies, additional applications for toroid power transformers include audio amplifiers, battery chargers, induction loop equipment, household appliances, motor drives, cranes, lighting and medical devices. Toroidal transformers are also used as inductors in low frequency transmitters and receivers.
The central part of a toroidal transformer is its donut-shaped core. The core is constructed from grain-oriented silicon-iron or permalloy, which is slit to form a steel strip. The steel strip is then wound into a coil, made from powdered iron. The construction of the strip ensures that all of the molecules are aligned with the direction of flux, or the rate of flow of energy across a given surface, and increases the capacity for magnetic induction.
Toroidal Transformers - MCI Transformer CorporationSince the core is closed and ring-shaped, air gaps are eliminated that are inherent in other cores. The cross-section of the core is typically either square or rectangular but can also be cylindrical in pricier cores.
The primary and secondary coils are wound in a densely concentrated manner to ensure that the entirety of the core's surface is covered. The two coils are linked by a magnetic field and act as conductors. When the primary coil receives AC voltage, this produces a varying magnetic field of voltage surrounding the conductor; the magnetic field activates the secondary conductor coil. This results in the toroid transformers changing the voltage and transferring electrical energy, ideally with the least amount of energy loss.
The design of toroid transformers prevents energy loss by confining the magnetic flux in the core. There are two directions of fluxes in the toroid magnetic field. Poloidal flux threads the hole in the center of the torus, and toroidal flux is parallel to the core of the torus.