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 12 of 12 for “"24 V"”.
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Design of a 380 V/24 V DC Micro-Grid for Residential DC Distribution
… is investigated by comparing to the existing 240 V AC system of homes. The primary goal is to design an energy efficient household to reduce the impact on the current power grid from increasing energy demand, and to manage local electricity generation and storage systems at the household …
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Řídící modul dvouosého kartézského manipulátoru pro PLC S7-1200
… PNP logiky a lze zvolit výstupní napětí 5 nebo 24 V podle typu a nastavení použitého driveru pro řízení motorů.
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Current-Source DC-DC Converter for Fiber-Optic Communication Systems
… 0.625 A, while maintaining an output voltage of 24 V and output power of 15 W. The complete steady-state analysis and design of the proposed converter in its single-stage form is also explained in detail. Performance evaluation of the proposed converter was carried out using LTspice. Results of …
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Portable iso-dielectrophoresis system
… consist of a RF frequency voltage source up to 24 V, syringe pumps, microscope, and computer. Much of this equipment is difficult to transport, making off-site sample collection of time-sensitive samples, such as blood, difficult. The miniaturization of the IDS system would allow measurements to …
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Porovnání komunikace fotbalových klubů Fortuna: Ligy a Premier League na sociálních sítích
… na sociální síti Twitter (X) v sezoně 2023/24. V analýze jsou porovnávány tři fotbalové týmy z České republiky, konkrétně AC Sparta Praha, SK Slavia Praha a FC Baník Ostrava a tři týmy z Anglie, konkrétně Manchester United F.C., Arsenal F.C. a Crystal Palace F.C. Každému zkoumanému týmu je …
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Portable Tungsten Coil Atomic Emission and Atomic Fluorescence Spectrometry
… here. The tungsten coil is extracted from a 24 V, 250 W commercial projector light bulb. The coil is housed in a small, aluminum cell. The emission signal exits from a small aperture in the cell, while the bulk of the blackbody emission from the tungsten coil is blocked. The resulting spectra …
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Design of a Printed Circuit Board for a Sensorless Three-Phase Brushless DC Motor Control System
… of a three-phase BLDC motor powered by a 24 V, high current external supply. Components used were selected to withstand an ambient temperature environment of 125 degrees C.</p> <p>The design for this PCB based motor control system was completed but fabrication and testing of the system was …
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The use of medical grade honey to reduce the incidence of surgical wound infection : a randomised controlled feasibility trial
… randomised. Twenty five received honey and24 received conventional treatment. Data were collected between February 2008 andMarch 2009.Results: At seven days the honey group had more positive wound swabs compared to thenon-honey group 20% (5/25) v 13% (3/24) (p= 0.70) but at 28 days positive …
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Multiphase Isolated DC-DC Converters for Low-Voltage High-Power Fuel Cell Applications
… mostly with low nominal output voltages around 24 V and 48 V, and power levels are found to be 3 to 10 kW [1][2]. A power conditioning system for such applications generally consists of a dc-dc converter and a dc-ac inverter, and the dc-dc converter for low-voltage, high-power fuel cells must …
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Intelligent field emission arrays
… emitter shows turn-on voltage of [approximately]24 V with field enhancement factor (b[sub]FN) of [approximately]370. We demonstrated that the LD-MOSFET provides excellent control of emission current. The threshold voltage of the LD-MOSFET is [approximately]0.5V. The integrated device can be …
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High-performance power converters leveraging capacitor-based energy transfer
… as the switch stress. A 80 - 170 V input, 12 - 24 V output prototype PWM Dickson converter is implemented using GaN switches. The measured peak efficiency is 97%, and high efficiency can be maintained over the entire input and output operating range. In addition, the similarity between …
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Wide bandwidth high efficiency power converter for rf amplifiers
… tensión de salida que debería cambiar entre 0V y 24V y la potencia máxima de la carga estará entre 50 W y 100 W. El rizado de la tensión de la salida deberá ser despreciable, en el rango de decenas de mV. Esta condición influye mucho y complica el diseño del filtro de la salida de la fuente …