Nicollet Technologies Corp. - Custom Toroidal Magnetics

Virtually any type of transformer except ferroresonant and current limiting can be designed and built on a toroid core. Also, custom magnetics such as chokes or current transformers can be built on toroid cores. Design potential is nearly unlimited. Toroidal magnetics are applied in virtually all industries and generally used where their inherent advantages justify their cost. They are especially popular for use in power supplies, computer peripherals, medical equipment, lighting products, military, audio and broadcast industries. Industry and government are now familiar with the benefits of these types of magnetic components.

Light Weight

Because they are more efficient, toroids are generally up to 50% lighter than conventional E-I type transformers.

Small Size

A toroid's compact dimensions are always less than E-I type transformers. Furthermore, the height to diameter relationships can be adjusted by design.

Low Stray Magnetic Field

Because toroids have no air gaps and the field is enclosed by the windings, they emit very low radiated magnetic fields. Primary and secondary circuits are uniformly wound around the entire core.

Flexible Mounting

Several mounting options make toroids easier and faster to install than conventional E-I type transformers.

Low Mechanical Hum

Because the core material is tightly wound, welded, and insulated, very low noise is experienced as compared to conventional E-I units.

Flexible Dimensions

In the design phase, the height and diameter can be varied around any constant power requirements. This benefit is significant to any design requiring a slim line or low profile.

Reduced No-Load Losses

Where stand-by modes constitute a large portion of the operating cycle, toroids can save significant energy. These savings alone can justify the use of toroidal transformers.