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| Presentation | 2009-12-18 13:25 Representation of Equivalent Circuit to Estimate Injected Currents for Contact Discharge of ESD-Generators Fumihiko Toya, Yoshinori Taka, Osamu Fujiwara (Nagoya Inst. of Tech.), Shinobu Ishigami, Yukio Yamanaka (NICT)  EMCJ2009-93 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | International electrotechnical commission (IEC) prescribes an immunity test (IEC61000-4-2) of electronic equipment for electrostatic discharges (ESDs), and specified the waveform of a discharge current from human ESDs, which shall be calibrated for contact discharges of an ESD-generator (ESD gun) onto an IEC recommended calibration target with a transfer impedance of 1. For the specified current waveform, however, it cannot always be injected onto actual equipment under test (EUT). In the present study, to estimate a discharge current for contact discharges of an ESD gun onto EUT, we proposed an equivalent circuit, which consists of a current source of the IEC specified current, an output impedance of the ESD gun and an injecting point impedance of EUT. We first measured the output impedance of an ESD gun on the standard arrangement with a network analyzer, and estimated injected currents for contact discharges onto circular metal plates with different sizes used in lieu of EUT, which allow one to calculate their injecting point impedance. As a result, we confirmed that estimated currents agree well with those obtained from induced output voltages of a magnetic filed probe placed in close proximity to the ESD gun. In order to examine the feasibility of the above equivalent circuit, we measured output impedance of an ESD gun with respect to testing arrangements, and estimated the corresponding injected currents onto a circular metal plate with a diameter of 30 mm, which shows that the output impedance in the frequency from 10 MHz to 300 MHz varies twofold and 2.5 times at most by the arrangements of he ESD gun and earth return cable, respectively, while the variability in estimated currents is small by less than 5 % in peaks and 20 % more or less in current falling parts, respectively, compared to the case for the standard arrangement. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | ESD gun / EUT / output/injecting point impedance / equivalent circuit / current estimation / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 350, EMCJ2009-93, pp. 49-53, Dec. 2009. | |
| Paper # | EMCJ2009-93 | |
| Date of Issue | 2009-12-11 (EMCJ) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
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) | |
| Download PDF | EMCJ2009-93 |
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| Conference Information | |
| Committee | EMCJ IEE-EMC |
| Conference Date | 2009-12-18 - 2009-12-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | NIFS |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EMCJ |
| Conference Code | 2009-12-EMCJ-EMC |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Representation of Equivalent Circuit to Estimate Injected Currents for Contact Discharge of ESD-Generators |
| Sub Title (in English) | |
| Keyword(1) | ESD gun |
| Keyword(2) | EUT |
| Keyword(3) | output/injecting point impedance |
| Keyword(4) | equivalent circuit |
| Keyword(5) | current estimation |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Fumihiko Toya |
| 1st Author's Affiliation | Nagoya Institute of Technology (Nagoya Inst. of Tech.) |
| 2nd Author's Name | Yoshinori Taka |
| 2nd Author's Affiliation | Nagoya Institute of Technology (Nagoya Inst. of Tech.) |
| 3rd Author's Name | Osamu Fujiwara |
| 3rd Author's Affiliation | Nagoya Institute of Technology (Nagoya Inst. of Tech.) |
| 4th Author's Name | Shinobu Ishigami |
| 4th Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
| 5th Author's Name | Yukio Yamanaka |
| 5th Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
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| Speaker | Author-1 |
| Date Time | 2009-12-18 13:25:00 |
| Presentation Time | 25 minutes |
| Registration for | EMCJ |
| Paper # | EMCJ2009-93 |
| Volume (vol) | vol.109 |
| Number (no) | no.350 |
| Page | pp.49-53 |
| #Pages | 5 |
| Date of Issue | 2009-12-11 (EMCJ) |
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