Abstract
The LED represents the hot topic has many traditional lighting systems because of their high energy efficiency and lifetime. Nevertheless, if the emissions of harmonic currents are relatively present in the literature because presenting problems on the grid, the measurements of emissions radiated by LED lamps have rarely been carried out. This work studies the magnetic field above LED Lamp Spot Type with different probes, for the three directions (HX, HY, HZ), in the frequency domain (FD) using a spectrum analyzer by the technique of near-field scan (NFS). The scan step is 0.5 cm, the LED lamps are powered directly by the electrical network 220 V/ 50 Hz, then quantify the magnetic field above the center of the inductor depending on the variation of the mode of lighting for each lamp. We used two lamps of power P = 6 W and P = 12 W, the lighting modes for each lamp are: mode 1 (white), mode 2 (colored), mode 3 (white + colored), to understand the impact of variation power and mode of lighting on the magnetic field.
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