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 11 of 11 for “"capacitive load"”.
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The design of an application specific interface driver for a high capacitive load
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.
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Design and characterization of a smart bit for in-situ force measurement, using capacitive load cells and acoustic spectra analysis to determine rock type and tool wear in rock excavation process
… Three different sensor designs were tested: a capacitive load cell with non-linear dynamics used to classify material type and tool wear conditions, an acoustic sensor used to classify tool wear, and a capacitive load cell with linear dynamics used to measure the cutting forces. Full scale rock …
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Design and Development of High-Frequency Switching Amplifiers Used for Smart Material Actuators With Current Mode Control
… a smart material actuator is ordinarily a highly capacitive load. Its capacitance is non-linear and its strain is hysteretic with respect to its electrical control signal. This actuator's reactive load property usually causes a large portion of reactive power circulating between the power …
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High-voltage wideband switching amplifier for capacitive loads
Why is it that arbitrarily driving imaginary loads has always required lots of power? In this thesis, a highly efficient switching amplifier class is developed that is capable of delivering energy to, as well as taking energy from, a capacitive load in a finely controllable, dissipationless manner. …
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Design Technique for Analog Temperature Compensation of Crystal Oscillators
… oscillator as a function of the crystal's capacitive load. This relationship leads to the development of the theory of temperature compensation by a crystal's external load capacitance. An example of the TCXO design process is demonstrated with the aid of a MATLAB script.
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Modeling and Control Design of a Bidirectional PWM Converter for Single-phase Energy Systems
… is of importance because of the sensitive loads. In this thesis, different multi-loop-based control schemes are investigated and compared, especially between the load current feedback control, PR control and capacitor current loop control. It shows that PR controller reduces the …
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Out-of-Loop Compensation Method for Op-Amps Driving Heavy Capacitive Loads
… gain and output impedance. When presented with a capacitive load, such as a MOSFET or ADC, feedback in an op-amp circuit can quickly become unstable. This thesis studies and characterizes an op-amp’s output impedance and how its interaction with this type of load creates a parasitic pole which …
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Design Techniques for High-Performance SAR A/D Converters
… compute and compensate for the mismatch of a capacitive DAC in a SAR ADC. The stochastic nature of the proposed calibration method enables determination of the mismatch of the CAPDAC with a resolution much better than that of the DAC. This allows the unit capacitor to scale down to as low as …
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An Isolated Micro-Converter for Next-Generation Photovoltaic Infrastructure
… the proposed system, which can have a very large capacitive load from the inverter. A new capacitor-transient limited (CTL) soft-start method senses the ac transient across the resonant capacitor, prematurely ending the lower switch on-time in order to prevent an excessive current spike. A …
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Nanowire Transistors and RF Circuits for Low-Power Applications
… metrics are found to be limited by the capacitive load of the contact pads as well as the resistance in the non-gated segments of the nanowires. Using computer models, we have also been able to extract intrinsic transport properties, quantifying the velocity of charge carrier injection, …
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A High-Efficiency Hybrid Resonant Microconverter for Photovoltaic Generation Systems
… and direct power transfer from the source to the load for the majority of the switching cycle. Each operating mode is analyzed in detail using state-plane trajectory plots. A systematic design approach that is unique to the newly proposed converter is presented along with a detailed loss analysis …