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For almost a century, Johnson Electric Coil has been providing great toroidal transformers for great reasons, in addition to unified, unselfish, single minded and outstanding customer service to every single client. In addition, Johnson's long-running success is due to their value added manufacturing techniques, which operates to the exacting production standards of its quality management system.
Whether you want to buy a standard "off-the-shelf" transformer or need custom transformers, Glen Magnetics is here to meet your exact requirements. Contact us for a quote today and discover why customers depend on us for both custom and standard parts. Send us your drawings or samples, or have our engineers create the best possible design for your application. Ask us about toroidal transformers.
Triad Magnetics understands that producing products for long-run reliability requires a high level of personal commitment and their team of experienced engineers is empowered with the responsibility for quality and reliability through a highly-evolved system of critical inspection, ensuring you with quality toroidal transformers and ongoing excellent customer service you expect and deserve.
We are among the largest US custom transformer manufacturers with products including inductors, high-power switching transformers, high-power 3-phase inverters/converters, toroidal transformers. We serve electronic, medical, military, industrial, standby power and telecommunication markets.
When you do business with Lenco Electronics, Inc., you can do it with confidence. Confidence that your toroidal transformer has been designed and engineered by professionals and has been manufactured with the highest quality materials available. Lenco's employees approach each individual job in a professional and knowledgeable manner- they know and care about what they are doing.
ISO 9001:2000 registered Sun Transformer creates custom transformers optimized for the needs of many industries. Large power, isolation & auto transformers, printed circuit mount power transformers, units for hostile conditions, units with ferrite or nickel cores for digital telecommunications use, etc.
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Industry Information
View A Video on Toroidal Transformers - A Quick Introduction
Toroidal Transformers
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. Used 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. Since 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.
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Image Provided by Johnson Electric Coil Company
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