Investigation of magnetic fields caused by transformers for low-voltage halogen lamps

Abstract

The investigation results of magnetic fields induced by electronic and magnetic transformers for low-voltage halogen lamps are presented. For the investigation the personal computer high definition audio system and software tools developed in the MATLAB® program package environment were used. The investigations of transformers magnetic fields in the frequency range from 20 Hz to 48 KHz were performed. The experiments have shown that the intensity of magnetic field of electronic transformer is higher than that magnetic field of magnetic transformer. The spectrum of induced magnetic field of electronic transformer is wide, discrete and ranges up to about 42 KHz.