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Paper Abstract and Keywords
Presentation 2020-07-03 16:30
Measurement of transient electric field at the occurrence of electrostatic discharge when a charged object approaches a grounded object
Hajime Tomita (JNIOSH) EMCJ2020-19
Abstract (in Japanese) (See Japanese page) 
(in English) Electrostatic discharge (ESD) is one of electromagnetic wave noise sources which affect the function of mechatronics equipment. Spark lengths, discharge currents and electric fields at the occurrence of ESD were measured when a charged object approached a grounded object. It was confirmed that spark lengths tended to shorten when approach speeds of the charged object increased. It was also confirmed that peak discharge currents tended to increase and rise times of discharge current tended to shorten when spark lengths shortened. Time change rates of electric field tended to become faster and amplitude spectra of electric field tended to increase when spark lengths shortened. Maximum values of time change rate of electric field at 138 mm away from the point where ESD occured correlated with peak discharge current, maximum values of time change rate of discharge current, and maximum second order differential values of discharge current; quasi electric field was dominant among components of electric field measured in this experiment.
Keyword (in Japanese) (See Japanese page) 
(in English) electrostatic discharge / spark length / discharge current / transient electric field / optical electric-field sensor / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 84, EMCJ2020-19, pp. 7-12, July 2020.
Paper # EMCJ2020-19 
Date of Issue 2020-06-26 (EMCJ) 
ISSN 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 EMD WPT  
Conference Date 2020-07-03 - 2020-07-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2020-07-EMCJ-EMD-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement of transient electric field at the occurrence of electrostatic discharge when a charged object approaches a grounded object 
Sub Title (in English)  
Keyword(1) electrostatic discharge  
Keyword(2) spark length  
Keyword(3) discharge current  
Keyword(4) transient electric field  
Keyword(5) optical electric-field sensor  
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1st Author's Name Hajime Tomita  
1st Author's Affiliation National Institute of Occupational Safety and Health (JNIOSH)
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Speaker Author-1 
Date Time 2020-07-03 16:30:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2020-19 
Volume (vol) vol.120 
Number (no) no.84 
Page pp.7-12 
#Pages
Date of Issue 2020-06-26 (EMCJ) 


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