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EPE 1999 - Topic 07a: Components
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 07: MEASUREMENTS AND SENSORS > EPE 1999 - Topic 07a: Components
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	A 4000 Arms Highly Stable Calibration Current Source   By W.F. Ray	[View]   [Download]
Abstract: An 836:1 toroidal transformer with a single turn secondary is used to provide a 4000 A 50 Hz ac source for calibrating current transducers. A MOSFET in a diode bridge in series with the ac mains supply is used to compensate for ac supply fluctuations. The paper describes the overall system and the two-loop control strategy used to maintain the current value within +/- 0.1%.
	High Frequency Improvements in Wide Bandwidth Rogowski Current Transducers   By W.F. Ray; R.M. Davis	[View]   [Download]
Abstract: A Rogowski Current transducer is an invaluable tool for semiconductor and power electronic circuit development since it is non-intrusive and does not saturate at high currents. This paper outlines improvements to the integrator design which enables a bandwith of 7MHz to be achieved.