An Unusual Source of Multiple ESD Events in Electronic Equipment

[摘要] Small wall mounted power supplies that plug directly into AC power mains and furnish power, usually low voltage DC, to equipment over a low voltage cable are ubiquitous in the electronic field. It is shown that these low voltage supplies can be the source of multiple ESD events that are fed to the connected system on the low voltage cable when an ESD event is applied to the system or directly to the power supplies. The multiple ESD events produce nasty current waveforms Examples of these waveforms and the measurement method are given. The results have been duplicated in three laboratories, results are presented from two of the three.

[发布机构] University of Oxford, Department for Continuing Education, Course Tutor Rewley House, 1 Wellington Square, Oxfordshire, Oxford; OX1 2JA, United Kingdom^1;1305 Arizona St. #101, Boulder City; NV; 89005, United States^2

[效力级别] 数学

[关键词] AC power main;Connected systems;Low voltages;Measurement methods;Power supply;Wave forms