UBC Theses and Dissertations

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UBC Theses and Dissertations

A D.C. amplifier and reference voltage supply suitable for use in a magnet current regulator Edwards, Edward Murray


The requirements imposed upon a d.c. amplifier and reference voltage supply, suitable for measurement and control of signals of the order of 1 volt to an accuracy of 10 parts per million are investigated. A basic block design is proposed to achieve this goal using a transistor differential amplifier of new design and a highly regulated reference voltage supply. The detailed design procedure for these building blocks is then presented. Exact analysis of important characteristics of several relevant circuit configurations is presented. The unit under discussion was constructed and the measured performance was found to be in good agreement with the predicted performance.

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