• About Us
  • Electro Pejvak has been manufacturing toroidal power transformers since 1994 in wide range of different models and dimensions. These transformers are used in many applications such as communication, medical equipments, and others. The structure of toroidal transformers minimizes the mechanical vibration of the strip which is the major cause of noise in conventional transformers. The unavoidable magnetic hum is nearly imperceptible in comparison with normal type. Toroidal transformers are more compact; generally toroidal transformers are 50% lighter than normal stacked laminated transformers. The “no-load” consumption of a stacked laminated transformer is 4 to 6 times higher. nevertheless, the “full-load” efficiency is always over 90%, in particular with transformers with ratings more than 100VA, where the power saving is more significant. The majority of toroidal transformers fall within the “E” class. This means the transformer can operate without any problem even if the hot spot temperature reaches 120°C. Also the ambient temperature does not exceed 50°C. The power indicated on the label is the actual power in the secondary winding. The transformer can work uninterruptedly at the rated power without any problem for short periods even with power twice its rated value. The error in the output voltage at full load is no more than 2%. The primary voltage can exceed up to 10% over the nominal value without any harmful effects.