Protection against transient overvoltage in precision AC-DC transfer measurement system

Thato E. Kgakatsi; Eugene Golovins; Johan Venter; Dan V. Nicolae

doi:10.1117/12.2501142

24 January 2019 Protection against transient overvoltage in precision AC-DC transfer measurement system

Thato E. Kgakatsi, Eugene Golovins, Johan Venter, Dan V. Nicolae

Proceedings Volume 11043, Fifth Conference on Sensors, MEMS, and Electro-Optic Systems; 110430X (2019) https://doi.org/10.1117/12.2501142
Event: Fifth Conference on Sensors, MEMS, and Electro-Optic Systems, 2018, Skukuza, South Africa

Abstract

Reduction in size and improvement of sensitive margins in modern semiconductor devices make them increasingly susceptible to stress and subsequent damage caused by the overvoltage. A fast responding and a higher energy absorbing overvoltage protection is desired. A hybrid solution is proposed. A moderate energy absorbing device is connected in parallel with a fast responding device to complement each other. Nonlinear current-voltage (IV) characteristics of these devices enable them to least interfere with the performance of the precision ac measurement system while reducing the effects of transient overvoltage. In this paper, the causes of transient overvoltage in ac-dc measurement system are analysed and a hybrid voltage limiting solution is proposed.

Citation Download Citation

Thato E. Kgakatsi, Eugene Golovins, Johan Venter, and Dan V. Nicolae "Protection against transient overvoltage in precision AC-DC transfer measurement system", Proc. SPIE 11043, Fifth Conference on Sensors, MEMS, and Electro-Optic Systems, 110430X (24 January 2019); https://doi.org/10.1117/12.2501142

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