Graduate Thesis Or Dissertation
 

A flux-coupled current measuring system with a bandwidth from D.C. to fifty megahertz

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/ht24wn388

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  • An instrument which measures current from D.C. to 50 megahertz by clipping a transformer core around a current carrying conductor is discussed. A Hall device, which is installed in the core cross-section, detects the flux in the core. This Hall device in conjunction with an amplifier is used to null the low frequency components of flux generated in the core by the current in the conductor. A multi-turn secondary winding performs the same type of operation at high frequencies. The current generated by these two methods, which is proportional to the input current, is amplified and measured with an oscilloscope or other suitable instrument. The mode of operation and the characteristics of the system are analyzed, with emphasis upon the midfrequency range. Results of measurements from an operating system are given and correlation to the model is shown.
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  • File scanned at 300 ppi using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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