Donut Technologies

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Toroidal Transformers are quit efficient operation with very low stray magnetic fields. Their small size and weight support a package that is easy to design into any application. Toroidal Transformers are more efficient (around 95%) than the cheaper laminated EI types.Our advantages compared to EI types  Smaller size (about half); Lower weight (about half); Less mechanical hum (making them superior in audio amplifiers;  Lower exterior magnetic field (about one tenth); Low off load losses(making then more efficient in standby circuits;  Single bolt mounting and more choices of shapes. FIELD OF APPLICATIONAutomatic Voltage Regulator- Capacity :- 0.5KVA to 15KVAWe manufacture toroidal transformer for all input voltage ranges as well as design for all types of control cards.Servo Voltage Stabilizer- By using toroidal transformers as a buck boost transformer in servo voltage stabilizer, we able to save energy, money & lots of space.Public Address System- We manufacture toroidal transformer for public address system from 100VA to 3000VAIsolation Transformers-Capacity:- 50VA to 50KVA per phase.