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 682 for “"Capacitor"”.
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The Capacitor-Coupled Shift Register
Made available in DSpace on 2014-12-10T20:13:33Z (GMT). No. of bitstreams: 1 7309904.pdf: 2442007 bytes, checksum: ad1a51dd02ee8f10582797170463c234 (MD5) Previous issue date: 1972
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Multi Resonant Switched-Capacitor Converter
This thesis presents a novel Resonant Switched-Capacitor Converter with Multiple Resonant Frequencies, abbreviated as MRSCC for both high density and efficiency non-isolated large step-down Intermediate Bus Converter (IBC). Conventional Resonant Switched-Capacitor Converter (RSCC) proposed by …
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Switch capacitor filter design aids
Two aids for the design of switched-capacitor filters (SCFs) are examined: breadboard modelling and computer simulations. A breadbroad was constructed based upon the same passive prototype of a seventh-order integrated filter. The breadboard met the original design specifications better than the …
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Stacked switched capacitor energy buffer architecture
Electrolytic capacitors are often used for energy buffering applications, including buffering between single-phase ac and dc. While these capacitors have high energy density compared to film and ceramic capacitors, their life is limited and their reliability is a major concern. This thesis presents …
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Noise analysis of switched capacitor filters
The self noise output of switched-capacitor (SC) filters was examined. The two main noise sources in SC filters are switch transistors and the operational amplifiers. These noise sources were modeled as switch thermal white noise and op-amp input white noise. The existence of direct and …
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Optically triggered thyristor for capacitor discharge applications
… of light to trigger semiconductor thyristors for capacitor discharge applications has been conducted. The investigation consisted of a technical literature and background search, design and analysis of optically silicon thyristors, and simulations of a capacitor discharge circuit containing the …
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Ion oxide silicon capacitor based pH sensing
… device is termed as iOSCAP (Ion Oxide Silicon Capacitor). As the name suggests, the device consists of an ionic layer on top of an oxidized Si wafer. The strength of the ionic solution determines the capacitance of the device, as the ionic strength modifies the work function of the ionic layer, …
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Switched capacitor networks : a novel prewarping procedure
… specifications prior to realization. in Switched Capacitor (SC) form are presented. These allow the design of arbitrary response requirements, exhibiting a low amount of error that normally results from the frequency warping associated with sampled-data networks. Adjustment is applied to the pole …
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A zero-crossing switched-capacitor filter design
Design of switched capacitor circuits in scaled CMOS technologies is becoming difficult because of low device intrinsic gain and reduced power supply voltage. To solve these problems, comparator-based switched-capacitor (CBSC) circuits and zero-crossing based circuits (ZCBC) were suggested as a …
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Electrochemical Capacitor Characterization for Electric Utility Applications
Electrochemical capacitors (ECs) have received a significant level of interest for use in the electric utility industry for a variety of potential applications. For example, ECs integrated with a power conversion system can be used to assist the electric utility by providing voltage support, power …
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Fault Location in High Voltage Shunt Capacitor Banks
High Voltage Shunt Capacitor Banks (HV-SCBs) are critical substation assets that are primarily used to improve power factor and thus power transmission capability. Over temperature, over voltages, manufacturing defects can cause internal failures of capacitor elements. With today’s sensitive …
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Microwave Overlay Capacitor Fabrication on Printed Circuit Boards
… varactors in the form of parallel plate overlay capacitors, using barium strontium titanate (BST): a ferroelectric, polymer composite thick film, has been developed in this work. BST was selected due to the commercial availability of powder. This involves the use of standard air brush techniques …
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Analysis of soft charging switched capacitor power converters
Switch capacitor converters are a microcosm in the world of power converters and as such have received little attention in both research and application. There is a perception that they possess many undesirable operating characteristics, such as inefficiency, poor output regulation and tracking, …
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The protection of high-voltage shunt capacitor banks
The use of shunt capacitor bank equipment is essential if a utility wishes to control the flow of reactive power effectively. The most significant results stemming from this will be lower losses on the system and an increased power transfer capability. Thus it is important that the methods used to …
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Novel Topology for Capacitively Isolated Switched Capacitor Converter
… topology for capacitive isolation in switched-capacitor DCDC converters, taking inspiration from previous work1. The research endeavors to develop a unique switched-capacitor topology that enables isolation between input and output voltages. By integrating elements of the Cockcroft-Walton …
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Dynamics of a conducting sphere between capacitor plates.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1973. B.S.
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Design and control of photoflash capacitor charging circuits
… an optimal strategy for charging photoflash capacitors. Photoflash capacitors need to be charged to voltages as high as 350V in low-voltage battery-powered portable devices. With the decreasing size of digital cameras, existing solutions are too large. This thesis will study the operation and …
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A Comparator-Based Switched-Capacitor delta sigma modulator
Comparator-Based Switched-Capacitor (CBSC) is a relatively new topology that replaces op-amps in sampled-data systems with a comparator and a set of current mirrors. CBSC is expected to lower power consumption, and to avoid several delicate tradeoffs of op-amp circuits. In this paper, the original …
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Digital signal processing analysis of switched capacitor filters
… signal analysis is presented on switched capacitor filters. This relatively new discrete-time circuit design technology provides a wide field of applications in the areas of filters, circuitry, and communications. It also raises numerous problems and challenges in both discrete-time design …
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