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Paper Abstract and Keywords
Presentation 2015-12-18 13:50
Measurement on Electromagnetic Field Strength from Different Power Line Pattern with Multiple LED bulbs
Takashi Kasuga, Yuhi Hayaoka, Hiromu Kawakami (NIT, Nagano College), Hiroshi Inoue (Open Univ.) EMCJ2015-97
Abstract (in Japanese) (See Japanese page) 
(in English) LED illuminated lamp, LED ceiling lamp and so on are widely used in the conventional home and commercial facility. However, the electromagnetic noise radiated from the inverter circuit implemented in the LED illumination unit has make a problem to radio communication systems. In this study, the electromagnetic noise amount for the number of LED bulbs and different wiring pattern are discussed. From the measurement result of voltage terminal noise, the harmonic component of the switching frequency is observed below 5MHz, however the different of electromagnetic noise amount by the number of LED bulbs and wiring pattern is not observed. The current noise is largest about 150MHz. When the number of the LED bulbs increases, the current noise value is saturated at 10th LED bulbs from the measured results, and the peak frequency is decreased. There is the difference of electric field radiation between cascade and brunch connection below 200 MHz.
Keyword (in Japanese) (See Japanese page) 
(in English) LED illumination unit / current noise / voltage termination noise / radiation electric field / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 377, EMCJ2015-97, pp. 45-50, Dec. 2015.
Paper # EMCJ2015-97 
Date of Issue 2015-12-11 (EMCJ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee EMCJ IEE-EMC  
Conference Date 2015-12-18 - 2015-12-18 
Place (in Japanese) (See Japanese page) 
Place (in English) TOYOTA CENTRAL R&D LABS., INC. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Power electronics, EMC 
Paper Information
Registration To EMCJ 
Conference Code 2015-12-EMCJ-EMC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement on Electromagnetic Field Strength from Different Power Line Pattern with Multiple LED bulbs 
Sub Title (in English)  
Keyword(1) LED illumination unit  
Keyword(2) current noise  
Keyword(3) voltage termination noise  
Keyword(4) radiation electric field  
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1st Author's Name Takashi Kasuga  
1st Author's Affiliation National Institute of Technology, Nagano College (NIT, Nagano College)
2nd Author's Name Yuhi Hayaoka  
2nd Author's Affiliation National Institute of Technology, Nagano College (NIT, Nagano College)
3rd Author's Name Hiromu Kawakami  
3rd Author's Affiliation National Institute of Technology, Nagano College (NIT, Nagano College)
4th Author's Name Hiroshi Inoue  
4th Author's Affiliation The Open University of Japan (Open Univ.)
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Speaker Author-1 
Date Time 2015-12-18 13:50:00 
Presentation Time 20 minutes 
Registration for EMCJ 
Paper # EMCJ2015-97 
Volume (vol) vol.115 
Number (no) no.377 
Page pp.45-50 
#Pages
Date of Issue 2015-12-11 (EMCJ) 


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