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Steady-state and transient C-V response of a high-voltage nonlinear barium titanate ceramic-disc power-snubber capacitor

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5 Author(s)
Campbell, C.K. ; Rand Afrikaans Univ., Johannesburg, South Africa ; van Wyk, J.D. ; Holm, M.F.K. ; Prinsloo, J.J.R.
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Observations are reported on the steady-state and transient capacitance-voltage (C-V) response of barium titanate (BaTiO3) nonlinear ceramic-disk capacitors with breakdown voltages above 1500 V, fabricated for use in power electronic dissipative resistance-capacitance-diode (RCD) snubbers to reduce the stored-energy requirement. This includes the in situ C-V snubber performance in a 1000 V bipolar junction transistor switch test circuit. The considerable difference between the room-temperature C-V response in a conventional AC test bridge and that in a novel 1500 V quasi-DC charge/discharge hysteresis test circuit is explained in terms of an equivalent circuit model derived for such nonlinear ceramic-disk capacitors

Published in:

Electronic Components and Technology Conference, 1992. Proceedings., 42nd

Date of Conference:

18-20 May 1992