Essays about: "DC"
Showing result 6 - 10 of 536 essays containing the word DC.
-
6. Extending Wireless Power Transfer Range for Self-Powered Micro Devices with mm-size Antenna
University essay from Linköpings universitet/Elektroniska Kretsar och SystemAbstract : The primary challenge in expanding the wireless power transfer range for miniaturized self-powered micro devices is the limited RF energy harvesting due to the small effective area and low gain of the mm-sized antennas used in these devices. This thesis introduces a method for extending the distance between an external energy source antenna (TX) and a micro-device antenna (RX) to more than 10 cm. READ MORE
-
7. Crystallinity of Sputtered TiO2 Thin Films: a Study of the Heating and Plasma Influence on the Growth
University essay fromAbstract : AbstractHigh-Power Impulse Magnetron Sputtering (HIPIMS) of TiO2 thin films enhances their photocatalyticproperties compared to the films prepared by standard sputtering methods, especially when no substrateheating is employed. With no heating, the coatings present an amorphous structure that benefits from theionization of the sputtered flux granted by HiPIMS, with respect to their photocatalytic performance. READ MORE
-
8. Development of a Compact Drive System for Total Artificial Heart
University essay from KTH/Medicinteknik och hälsosystemAbstract : Over eight decades of research into total artificial hearts (TAHs) has significantly contributed to saving end-stage heart failure patients. However, at the current stage of development TAHs have several limitations, one of them being their bulkiness. READ MORE
-
9. Reaction Wheel Control System for a Self-balancing Bike : Reaction wheel based control mechanism for a small scale prototype bike
University essay from KTH/Skolan för industriell teknik och management (ITM)Abstract : In this thesis, the design of a self balancing prototype bike with a reaction wheel as balancing mechanism will be investigated. Bikes are inherently unstable systems, that dynamically resemble an inverted pendulum at a stand still. READ MORE
-
10. Mathematical Model for Inverter Power Output in PV Parks
University essay from Uppsala universitet/Institutionen för materialvetenskapAbstract : Solar photovoltaic (PV) parks have proliferated all over the world as a result of the growing demand for electricity, and especially electricity from renewables. As these parks become larger and complex, it becomes increasingly important to develop accurate and efficient mathematical models that can be used to predict their performance and optimize their design. READ MORE