Thesis (M. App. Sc.)--Carleton University, 2002. / Includes bibliographical references (p. 85-89). Also available in electronic format on the Internet.

Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Meliopoulos, A. P. Sakis; Committee Member: Divan, Deepakraj M.; Committee Member: Harley, Ronald G.; Committee Member: Johnson, Ellis L.; Committee Member: Taylor, David G.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 38-39). Also available via the Internet.

This dissertation reports on the secondary analysis of data obtained in 2013 about first-year university student’s conceptual understanding of concepts related to simple DC-circuits. The aim was to investigate the nature of conceptual understanding of students entering first-year physics at a South African university, and to explore how their conceptual understanding relates to contextual factors. Data collected from 815 participants comprise contextual data about each participant and responses in the DIRECT-instrument (Determining and Interpreting Resistive Electric Circuits Concepts Test). The conceptual framework for this study was based on a combination of the model about the effectiveness of science teaching and the critical outcomes related to electricity and electric circuits, which involve aspects of current, energy, potential difference and the physical aspects of circuits. The contextual data included information at personal, classroom and school level. Data were analysed using Rasch analysis. The study found that students entering a first-year physics module at a South African university have poor conceptual understanding about simple DC-electric circuits. The analysis of the DIRECT-instrument revealed that students had difficulties understanding concepts relating to parallel circuits, confusing terms such as voltage and current, and current and energy. They also struggled to relate a circuit diagram to an actual circuit and issues regarding short circuits were prominent. The analysis of the contextual data revealed that students’ degree of exposure to practical work does not imply conceptual understanding of DC-electric circuits. Factors that relate with conceptual understanding included students’ attitudes towards science, gender and previous achievement in Science, Mathematics, and English. Key terms: Conceptual understanding, DC-electric circuit, Misconception, Aptitudes / Dissertation (MSc)--University of Pretoria, 2021. / Science, Mathematics and Technology Education / MEd / Unrestricted

An algorithm is derived for the removal of the DC offset from a faulted current signal using a microprocessor sampling on real-time. The algorithm is to be used instead of the analog Mimic circuit in distance computer relaying. Four variations of the algorithm were derived and tested to determine the best compromise between time response and noise sensitivity. The relay hardware is taken into consideration for the derivations to avoid adding any hardware to the relay. The graphical results of the test run in an analog simulator at the Virginia Tech Power Systems Laboratory are presented. Faults at different voltage angles were performed to determine the algorithm's performance at different levels of DC offset. From the graphical response obtained from the test and taking into consideration hardware and software limitations, a preferred algorithm is selected with a good compromise between time response and noise sensitivity. / Master of Science

Guided probe testing of printed circuit boards is a technique that has been well developed by automatic test equipment manufacturers to pinpoint faults. Though the guided probe technique of testing printed circuit boards is a process capable of providing high diagnostic resolution, the technique is inefficient when it is performed manually. The throughput of board testing is bottlenecked because of the time required for an operator to manually move a probe to a specific location on the board under test in order to measure a stimulated response. Integration of a CAD driven X-Y prober is a way to automate guided probe testing of printed circuit boards. This research integrates a personal computer based automated guided probe testing system. A CAD tool provides geometric and circuit connectivity information. Automatic test generation, CAD information post processing, and automatic guided probe testing software tools are developed to implement the system. The ultimate result is increased circuit board test station throughput. This makes the circuit board manufacturing process more efficient and less expensive while maintaining high quality products through more extensive testing. / Master of Science

This dissertation investigates the implementation of S-parameter based network techniques for the analysis of multiconductor, high speed VLSI integrated circuit and packaging interconnects. The S-parameters can be derived from three categories of input parameters: (1) lossy quasi-static R,L,C and G, (2) lossy frequency dependent (dispersive) R,L,C,G and (3) the propagation constants, Γ, the characteristic impedance, Z(c) and the conductor eigencurrents, I, derived from full wave analysis. The S-parameter network techniques developed allow for: the analysis of periodic waveform excitation, the incorporation of externally measured or calculated scattering parameter data and large system analysis through macro decomposition. The inclusion of non-linear terminations has also been developed.

The performance of SPICE and Network C (NC) circuit simulator when simulating MOS transistor circuits has been investigated and compared. SPICE analog model, NC analog model and NC MOS_PWL model are the three MOS transistor models being used. The comparison between SPICE and NC includes five areas. They are MOS transistor model, circuit analysis and computational methods, limitation on the ability to simulate circuits containing the MOS transistor diode configuration, run time and the ability to build new circuit component models using derived equations.

No description available.

Thesis (M.App.Sc.) - Carleton University, 2007. / Includes bibliographical references (p. 106-108). Also available in electronic format on the Internet.