Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"current-controlled"”.
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Development of a wireless current controlled stimulator for individuals with spinal cord injury
… mobility to SCI by applying low level electrical current to the paralyzed muscles so as to enhance that person’s ability to function and live independently. However, due to the limited number of commercially available FES assisted exerciser systems and their rather high cost, the conventional …
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Development of a temperature insensitive current controlled current source for LNA bias circuit applications
… development of a novel temperature insensitive Current Controlled Current Source (CCCS), in bipolar technology, in order to provide accurate amplification of a Proportional To Absolute Temperature (PTAT) reference current. The output current of the CCCS is intended for application as the bias …
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Growth and characterization of gallium arsenide grown by conventional and current-controlled liquid phase epitaxy.
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Materials Science and Engineering.
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Evaluation of A New Power-Hardware-In-The-Loop (Phil) Interface Algorithm For Current Controlled Amplifiers
… developed, are designed for use with voltage controlled power amplifiers that supply the power to the hardware under test. In fact there is only one IA that is available for use with current controlled power amplifiers, used as the hardware's power supply, which is known to date. This IA is …
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The design of an H∞ voltage regulator for a predictive current controlled three phase PWM power converter
… as a DC voltage regulator for the predictive current controlled pulse with modulated (PWM) three-phase power converter to compensate the uncertainty caused by the predictive current controller. The H∞ theory has its unique approach to the uncertainty issue, its design method allows both the …
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Analysis and development of improved convertes for LED drivers with special focus on efficiency and dimming
… it is fundamental to drive the LEDs through a current-controlled power supply. The aim of this driver is not only to drive the LEDs, but also to fulfill all required standards.
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Late Paleogene (Eocene to Oligocene) paleoceanography of the northern North Atlantic
… Sea and Faeroe-Shetland Channel. Erosion and current-controlled sedimentation continued through the Oligocene; however, above reflector R3 (middle to upper Oligocene), the intensity of abyssal currents decreased. Above reflector R2 (upper lower Miocene) current-controlled sedimentation became …
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Solar Energy Conversion and Control Using Organic Photovoltaic Cells
… partial shading and manufacturing variation, a current-controlled power converter, and an energy storage device with charging and discharging capabilities.</p>
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Development of time delay current control for lead acid battery 12 v DC by using arduino
Development of time delay current control for lead acid battery 12 V dc by using Arduino is the aim of this thesis. The development problem is necessary before applying control techniques to guarantee the execution of any task according to a desired input with minimum error. The main objective of …
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A multi-level explanation of the process of innovation
… influenced and informed by a case study of the current controlled environment agriculture industry
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HARMONIC MODELING AND SIMULATION OF NON-LINEAR PWM INVERTERS IN DISTRIBUTED GENERATION SYSTEMS
… resulting from the deployment of hysteresis current-controlled inverters within the ac network. In addition, the ac and dc harmonic interactions under both ideal system conditions (constant dc excitation and pure sinusoidal ac voltages) and non-ideal system conditions (harmonic terms are …
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Performance analysis of high power photoconductive switch at elevated temperature
… the on-state operation of the device showed current controlled negative resistivity behavior at elevated temperature, due to heating of contacts and the bulk. Analysis shows that filamentary conduction results in thermal runaway that severely affects and damages the device as the breakdown …
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MICON: Connection logic circuits using current-based data representation and thresholding methods
… logic) is the name given to a set of fast current controlled circuits characterized by its methods of data representation and gate interconnections. Because of its properties, only one basic circuit topology is required to implement a particular CONLOG family. Furthermore, to adjust circuit …
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Design for implementation : fully integrated charging & docking infrastructure used in Mobility-on-Demand electric vehicle fleets
… publicly shared electric vehicles, while using a current-controlled locking mechanism with up to 250 pounds of force. Additionally, the connector is linked to the charging post through a stainless steel retractable arm, which is composed of a spring-loaded pulley mechanism. This paper discusses …
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Superconducting thin film nanoelectronics
… devices: the nTron, the yTron, and the current-controlled nanoSQUID. These devices derive their functionality from the exploitation of nanoscale superconducting effects such as kinetic inductance, electrothermal suppression, and current-crowding. Patterning these devices from …
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Measurement of near-surface void fraction and macrolayer thickness in boiling water and silica-based nanofluid
… water and 0.01% (by volume) SiO₂nanofluid. A current controlled power source heated a sandblasted, stainless steel plate resting in an isothermal bath. The silica nanofluid had a CHF enhancement of 82% over the DI water along with a slightly higher (20% enhancement) heat transfer coefficient. …
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Návrh analogových obvodů s nízkým napájecím napětím a nízkým příkonem
… amplifier), CCII (second generation current conveyor), FB-CCII (fully-differential second generation current conveyor), FB-DDA (fully-balanced differential difference amplifier), VDTA (voltage differencing transconductance amplifier), CC-CDBA (current-controlled current differencing …
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Advanced control architectures for grid connected and standalone converter systems
… voltage of a standalone single-phase inverter is controlled directly by controlling the output filter capacitor current without using a dedicated output voltage sensor. A method to estimate the output filter capacitance is also presented. For the grid connected converter, a novel closed loop …
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Radio frequency digital to analog converter
… and clock jitter are all culprits. A DAC output current controlled by an oscillating waveform is proposed to mitigate the effects of the switching distortion. The oscillating waveform should be a multiple (k*fs) of the sampling frequency (f), where k>l. The waveforms can be aligned so that the …
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Cenozoic Variations in the Deep Western Boundary Current as Recorded in the Seismic Stratigraphy of Contourite Drifts, Newfoundland Ridge, Offshore Canada
… under the influence of the Deep Western Boundary Current (DWBC). Seismic-reflection profiles constrained by drill sites from IODP Expedition 342 are used to map the spatial and temporal distribution of contourite sedimentation and to evaluate the Cenozoic history of the DWBC within a preexisting …
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