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Toroidal transformers are technically the best transformers. They almost reach the characteristics of the physically ideal transformer. Small air gap, low weight, high induction, low warming and no hum noise are the clear advantages of toroidal transformers.
Medical engineering: Defibrillation devices, dental technology and man-made kidneys. We are also able to manufacture transformers with decreased leakage current conform to EN 60742. By using a special construction and special insulation, it is possible to reach very good technical values.
Traffic technology: Railway technology, automotive engineering, aviation and space and traffic lights, such as signal givers have use for toroidal transformers because of their low weight. Application with 400 Hz and higher can be assembled by using c-cores.
Even for the illumination technology conform to EN 60598-2-6 VDE 0711 toroidal transformers are suitable, mostly potted. If needed, we can also construct transformers with special geometric forms, for example as application in designer objects.
Toroidal transformers furthermore find use in audio devices, mainly as powe transformers, because of the low weight. Another application is as transforer with low stray field for preamplifiers.
Inverters of photovoltaik systems also have need for toroidal transformers. The usually low output voltage is increased. The high efficiency of toroidal transformers is very important in this section. We are able to optimize them to the last milliwatt of iron- and copper losses.
Automation has use for toroidals, too, as the available space and volume are very limited. It is possible to adjust diameter and height perfectly to the desired dimensions.
For electrical metrology, toroidal transformers are used as current transformers, transducers or as power supply with low stray fields. Not only the winding ratio is similiar to the ideal transformer, also the precision of the transmission (distortion factor) meet this requirement.
Power supplies use toroidal transformers in general, because of the advantages mentioned before. The low inner resistance allows to also use them for devices of line simulation.
For household and office devices, toroidal transformers are preferred because of the low weight. Norms like IEC 65 VDE0860 (requirements of mains operated electronic and related apparatus for household and similiar general use) and IEC 380 VDE0860 (safety of electrically energized office machines) can be fullfilled.
Welding devices of all kinds, like ultrasonic welding appliances, plastic welding appliances or metal welding appliances have built in toroidal transformers of high or low power. The low weight is of high importance for portable devices. The low inner resistance helps to increase the welding currents.
Switchboards also use toroidal transformers. They are fast and easy to mount by track rails (e.g. NS35).
To supply machines like textile machines or machines of the paper industry, toroidal transformers are suitable.
Applications in environmental technologies and in safety engineering, e.g. completely potted, are prevailing as well.
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