Exin produces Toroidal Cores in various dimensions, made to order Customer specification according to DIN 42311 or any other equivalent country standards. The Strip Wound Cores or Toroidal Cores are manufactured from coils of CRGO electrical steel to yield closely controlled electro-magnetic characteristics and dimensional accuracy. The cores are stress-relief annealed in an inert atmosphere to restore the magnetic properties. Cores are spray-painted and are tested for magnetic properties.

Thus more efficient use of the core material in a toroidal can result in size and weight reduction of up to 50% (depending on power rating), allowing the design engineer to innovate by exploiting the toroidal's small size, low weight, ease of mounting, and flexible dimensions. Special care is taken in handling and packing in order to avoid damage to the Toroidal Cores.

Advantages of Toroidal Transformers

Toroidal transformers offer many advantages over standard laminated transformers. Toroidals provide quiet, efficient operation with very low stray magnetic fields. Their small size and weight support a package that is easy to design into any application.

Efficiency

Since Toroidal Cores are constructed of a continuously wound ribbon, there is virtually no air gap. The windings are evenly wrapped over the entire core allowing the transformer to operate at a higher flux density than in standard transformers. The magnetic flux of the windings is oriented in the same direction as the grain-oriented core, thus achieving very high electrical efficiencies. Efficiency is a measure of a transformer's ability to deliver the input power to the load.

Various types of Toroidal Cores Available are:

1.Uncut, non Impregnated
2.Uncut Impregnated
3.Uncut epoxy coated
4.Cut Impregnated

Applications
Power Transformer, Current Transformer, Instrument Transformer, Inductor, Ballast, AF Transformer, Magnetic Amplifier, Voltage Stabilizer 7 regulators, etc

Exin Range of Toroidal Cores
Max OD - 600 mm
Min ID – 10 mm
Min Strip Width – 7 mm
Max Strip Width – 100 mm