Search for dissertations about: "Low Voltage"
Showing result 1 - 5 of 198 swedish dissertations containing the words Low Voltage.
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1. Low Voltage CMOS Radio Receiver Front-End Design
University dissertation from Department of ElectroscienceAbstract : The mass production of integrated circuits for digital electronics has made CMOS technology the most frequently used IC process today. Thanks to the large production volume, CMOS has increasingly become the most cost efficient technology of choice, and the fast development of small, high speed CMOS devices has made the technology feasible for many RF applications. READ MORE
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2. Monolithic Integrated Oscillators - Phase Noise Analysis and Inductor Modeling
University dissertation from Department of ElectroscienceAbstract : This doctoral dissertation studies voltage controlled oscillators (VCOs) that operate at low supply voltages. Due to smaller transistor sizes and lower supply voltage ratings with every new CMOS technology, voltage headroom is diminishing. READ MORE
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3. The Effects of Lightning on Low Voltage Power Networks
University dissertation from Uppsala : Acta Universitatis UpsaliensisAbstract : The present society is highly dependant on complex electronics systems, which have a low damage threshold level. Therefore, there is a high risk of partial or total loss of the system’s electronics when they are exposed to a thunderstorm environment. READ MORE
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4. Steady State Operation and Control of Power Distribution Systems in the Presence of Distributed Generation
University dissertation from Chalmers University of TechnologyAbstract : In this thesis, the impact of distributed generation (DG) on steady state operation and control of power distribution systems is investigated. Over the last few years, a number of factors have led to an increased interest in DG schemes. DG is gaining more and more attention worldwide as an alternative to large-scale central generating stations. READ MORE
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5. Characterization of Electrical Insulation Exposed to Arbitrary Voltage Waveforms
University dissertation from Chalmers University of TechnologyAbstract : The extensive use of power electronics in power systems today gives rise to other voltage waveforms than the conventional 50/60 Hz sinusoidal and consequently other types of electric stress act on high voltage insulating materials. Previous studies has shown that Pulse Width Modulated (PWM) voltages and similar waveforms increase stress in Adjustable Speed Drives (ASD) as compared with sinusoidal waveforms and it has also been shown that partial discharge (PD) activity is intensified during PWM voltages and that rise time of square like pulses affect PD inception voltage. READ MORE