IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
Evaluation of distribution of switching noise generated by LED lamp on lighting duct rail
Ifong WuShinobu IshigamiYasushi Matsumoto
Author information

2013 Volume 2 Issue 11 Pages 478-483


To evaluate the distribution of common mode noise current generated by an LED lamp flowing on the lighting duct rail, radiation noise on the lighting duct rail is investigated by measuring the magnetic field distribution which correlates well with the common mode noise current distribution. The trough of the magnetic field distribution is observed around the position where the LED lamp is installed. When the duct rail is longer than the wavelength, the peaks and troughs of the magnetic field distribution on the duct rail appear every half wavelength. To examine the measurement result, a single wire model is proposed to simulate the distribution of the LED noise on the lighting duct rail and its result is compared with the measurement result. A good agreement between these results is obtained. This single wire model is successfully expressed both the duct rail part and the noise source part.

Information related to the author
© 2013 The Institute of Electronics, Information and Communication Engineers
Previous article Next article