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Filtering by: Subject X-rays -- Equipment and supplies Remove constraint Subject: X-rays -- Equipment and supplies Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Distortion analysis of switched-current circuits

    Creator:
    Lee, Wing-sun R.
    Abstract:
    Recently, switched-current circuits have received great attention because they offer potentially better performance in terms of speed, low voltage power supplies, and accuracy in mixed-mode analog-digital signal processing. In this thesis, the distortion characteristics, DC offset and AC gain errors induced by the threshold voltage, channel width, channel length, and...
    Resource Type:
    Masters Thesis
    Full Text:
    ' which usually requires a higher power-supply voltage. Since SI circuits work with 'current' and need no

  • Nonuniformly coupled microstrip transversal filters for analog signal processing

    Creator:
    Hayden, Leonard.
    Abstract:
    An analog signal processing technique allowing arbitrary step response is presented. A transversal structure is used with nonuniform contradirectional coupling to provide continuous tapping. Sinusoidal and chirp responses are presented as examples implemented using this nonuniformly coupled microstrip structure.
    Resource Type:
    Masters Thesis
    Full Text:
    ) strict CMATR(X a.b: / Determine impedance at given location using physical geometry and curve-fit

  • Fabrication of Cost-effective Flexible Glucose Sensor for Continuous Glucose Monitoring

    Creator:
    Mullapudi, Sri Sai Kameswara
    Abstract:
    Diabetes is a pandemic that affects nearly 29.1 million Americans and the fourth leading cause of mortality in the US. Type 1 diabetes is a chronic condition which occurs due to little to no production of insulin by the pancreas. This form of diabetes requires constant monitoring of blood glucose...
    Resource Type:
    Masters Thesis
    Full Text:
    glucose sensor and hence involved the usage of a 1” x 1” size substrate on a 12 μm thick titanium foil

  • The design and development of the wearable health and activity monitor

    Creator:
    Glover, Neil E.
    Abstract:
    This work describes the development of an accurate, low-cost, expandable and wearable health and activity monitoring platform. Wearable monitors used to track physical activity are becoming an increasingly popular and effective way to combat our dangerously sedentary lifestyles. Unfortunately most existing wearable solutions are either costly, inaccurate or cumbersome. The...
    Resource Type:
    Masters Thesis
    Full Text:
    The Design and Development of the Wearable Health and

  • Simulation of a high voltage direct current transmission system in an electromagnetic transients program using semiconductor terminals

    Creator:
    NwaChukwu, David O.
    Abstract:
    In high voltage direct current(HVDC) systems transmission technology, a.c. power is converted(rectified) to d.c. power by means of a controlled rectifier bridge. This d.c. power is then transmitted through a d.c. link to another converter(inverter) where it is converted back to a.c. power by means of another controlled rectifier bridge....
    Resource Type:
    Masters Thesis
    Full Text:
    is fired after a delay X, (on T3) and T1 conducts for extra u degrees along with T3. (When T1 goes

  • Improved efficiency in medium-power flyback converters

    Creator:
    Ruttanapaibooncharoen, Surin
    Abstract:
    Switch-mode power supplies (SMPS's) not only convert energy, they also consume it. Typical operational efficiencies are approximately 25 to 60% for linear power supplies, and approximately 50-90% for switching power supplies. This means that products whose end-use electronics are dc, such as televisions and DVD players, could consume 50% less...
    Resource Type:
    Masters Thesis
    Full Text:
    electronics, and lightweight portable equipment and modules. The drawbacks are that this power supply

  • On the study of WEC prototype advancement with consideration of real-time life extending control

    Creator:
    Stillinger, Chad J.
    Abstract:
    Renewable energy is a topic of significant interest and importance in the world today. Ocean wave energy, particularly in areas such as the Oregon Coast, has considerable potential as a renewable resource. However, to rightly evaluate the overall cost of energy for wave energy converters, survivability and maintenance issues must...
    Resource Type:
    Dissertation
    Full Text:
    ................................................................................... 82 4.16 A histogram of ten different damage levels on the x-axis and total accumulated damage in

  • A Microgrid Design Case Study : Synchrophasor Placement and Development of a Protection Laboratory for the Oregon State University - Corvallis Campus

    Creator:
    Huo, Chen
    Abstract:
    In the past two years, Oregon State University (OSU) Corvallis campus suffered several power outages. The estimated cost of one of those outages was close to a million dollars worth of equipment and impact on research projects. Meanwhile, the campus grid operates with severely aging power assets. The reliability of...
    Resource Type:
    Masters Thesis
    Full Text:
    cost of one of those outages was close to a million dollars worth of equipment and impact on research

  • Development of a Collision Detection Module for Avian and Bat Species on Wind Turbine

    Creator:
    Davis, Cassandra L.
    Abstract:
    Renewable energy technology continues to grow in popularity as countries aim to reduce greenhouse gas emissions. Land based and offshore wind turbines are one option for expanding renewable energy sources. However, as wind energy adoption increases, so does the need for enhanced monitoring of wind turbines’ potential effect on local...
    Resource Type:
    Capstone Project
    Full Text:
    Development of a Collision Detection Module for Avian and

  • Testing of wave energy converters using the Ocean Sentinel Instrumentation Buoy

    Creator:
    Lettenmaier, Terrance
    Abstract:
    Ocean testing of Wave Energy Converter (WEC) prototypes is necessary to facilitate commercial WEC development. The Ocean Sentinel Instrumentation Buoy, completed in August 2012, provides a stand-alone load for WEC prototypes during ocean testing. The first part of this work was to develop the power conversion and data acquisition equipment...
    Resource Type:
    Dissertation
    Full Text:
    this work was to develop the power conversion and data acquisition equipment installed on board the