Electromechanical switching devices such as relays may be surprisingly forgiving to occasional, but temporary, electrical stress beyond specification. Consequently delayed openings due to welded contacts on the order of milliseconds usually have been unnoticed and hence have not been reason for concern. However, as electrical systems of vehicles are getting "smarter" and more and more diagnostic routines are being implemented, even such short delay times may be translated as errors. Pre-conditioning contact surfaces has been explored as a measure to increase the welding resistance and eliminate contact opening delays. The 20-A-class relay investigated has been optimized to break occasional current peaks up to 80 ADC.
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Thomas J. SCHOEPF, Abdellah BOUDINA, Robert D. ROWLANDS, Brent T. REPP, "Pre-Conditioning Automotive Relay Contacts to Increase Their Resistance to Dynamic Welding" in IEICE TRANSACTIONS on Electronics,
vol. E90-C, no. 7, pp. 1441-1447, July 2007, doi: 10.1093/ietele/e90-c.7.1441.
Abstract: Electromechanical switching devices such as relays may be surprisingly forgiving to occasional, but temporary, electrical stress beyond specification. Consequently delayed openings due to welded contacts on the order of milliseconds usually have been unnoticed and hence have not been reason for concern. However, as electrical systems of vehicles are getting "smarter" and more and more diagnostic routines are being implemented, even such short delay times may be translated as errors. Pre-conditioning contact surfaces has been explored as a measure to increase the welding resistance and eliminate contact opening delays. The 20-A-class relay investigated has been optimized to break occasional current peaks up to 80 ADC.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e90-c.7.1441/_p
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@ARTICLE{e90-c_7_1441,
author={Thomas J. SCHOEPF, Abdellah BOUDINA, Robert D. ROWLANDS, Brent T. REPP, },
journal={IEICE TRANSACTIONS on Electronics},
title={Pre-Conditioning Automotive Relay Contacts to Increase Their Resistance to Dynamic Welding},
year={2007},
volume={E90-C},
number={7},
pages={1441-1447},
abstract={Electromechanical switching devices such as relays may be surprisingly forgiving to occasional, but temporary, electrical stress beyond specification. Consequently delayed openings due to welded contacts on the order of milliseconds usually have been unnoticed and hence have not been reason for concern. However, as electrical systems of vehicles are getting "smarter" and more and more diagnostic routines are being implemented, even such short delay times may be translated as errors. Pre-conditioning contact surfaces has been explored as a measure to increase the welding resistance and eliminate contact opening delays. The 20-A-class relay investigated has been optimized to break occasional current peaks up to 80 ADC.},
keywords={},
doi={10.1093/ietele/e90-c.7.1441},
ISSN={1745-1353},
month={July},}
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TY - JOUR
TI - Pre-Conditioning Automotive Relay Contacts to Increase Their Resistance to Dynamic Welding
T2 - IEICE TRANSACTIONS on Electronics
SP - 1441
EP - 1447
AU - Thomas J. SCHOEPF
AU - Abdellah BOUDINA
AU - Robert D. ROWLANDS
AU - Brent T. REPP
PY - 2007
DO - 10.1093/ietele/e90-c.7.1441
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E90-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2007
AB - Electromechanical switching devices such as relays may be surprisingly forgiving to occasional, but temporary, electrical stress beyond specification. Consequently delayed openings due to welded contacts on the order of milliseconds usually have been unnoticed and hence have not been reason for concern. However, as electrical systems of vehicles are getting "smarter" and more and more diagnostic routines are being implemented, even such short delay times may be translated as errors. Pre-conditioning contact surfaces has been explored as a measure to increase the welding resistance and eliminate contact opening delays. The 20-A-class relay investigated has been optimized to break occasional current peaks up to 80 ADC.
ER -