Essays about: "transducer"

Showing result 21 - 25 of 69 essays containing the word transducer.

1. 21. Comparison between Active and Passive AC-DC Converters For Low Power Electromagnetic Self-Powering Systems : A theoretical and experimental study of low power AC-DC converters

   University essay from Mittuniversitetet/Institutionen för elektronikkonstruktion

   Author : Ibrahim Hamed; [2020]
   Keywords : Energy-harvesting; electromagnetic; rectifiers; AC DC-converters; Active voltage doublers; Passive voltage doublers.;

   Abstract : Electromagnetic based energy harvesting systems such as Variable reluctance energy harvesting systems (VREH) have shown to be an effective way of extracting the energy of rotating parts. The transducer can provide enough power to run an electronic sensing system, but the problem arises in finding an efficient way of rectifying that power to generate a stable energy supply to run a system, which this report will investigate. READ MORE

3. 22. Acoustic Characterization of the Cellulose-coated Perfluorocarbon Droplets based on Phase Velocity Measurements

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Emma Lindroth; [2020]
   Keywords : Ultrasound; Droplets; Contrast agent; Cellulose; Perfluorocarbon; Acoustic characterization; Non-destructive evaluation; Phase velocity; Bulk modulus; Compressibility;

   Abstract : Today, microbubbles are one of the most commonly used ultrasound contrast agents, since their high compressibility results in a strongly scattered signal. Despite this advantage, microbubbles experience limitations by the decreased stability and large diameter. READ MORE

4. 23. Pressurizing of high-pressure fuel system forsingle cylinder test cell

   University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

   Author : Gustaf Glaad; [2019]
   Keywords : Alternative fuels; Ultra high-pressure fuel system; Common rail direct injection fuel system; Diesel-like fuels; Compression ignited fuels;

   Abstract : This master thesis covers the development of a high-pressure fuel system for compression ignitedfuels such as diesel and diesel-like fuels that will be deployed into a single cylinder test cell at AVLMTC Södertälje, Sweden. The test cell is used by AVL to conduct research and testing of new fuelsfor their customers and this new fuel system will widen the span of fuels able to be tested by theequipment. READ MORE

5. 24. Characterization of graphene-based sensors for forensic applications : Evaluating suitability of CVD graphene-based resistive sensor for detection of amphetamine

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Ülle-Linda Talts; [2019]
   Keywords : Sensor systems; Chemical sensors; Nanosensors; Drug screening; Nanomaterials; Sensorsystem; Kemiska sensorer; Nanosensorer; Drug screening; Nanomaterial;

   Abstract : Recent improvements in sensor technology and applications can be partly attributed to the advancements in microand nanoscale fabrication processes and discovery of novel materials. The emergence of reliable and inexpensive methods of production of monolayer materials, such as graphene, has revealed the advantageous electronic properties which when utilized in sensory elements can significantly enhance response to the input signal. READ MORE

6. 25. Influence of media on piezoelectric pressure transducers

   University essay from KTH/Strömningsmekanik och Teknisk Akustik

   Author : Atsuhide Inatomi; [2019]
   Keywords : ;

   Abstract : The influence of media on piezoelectric pressure transducers are studied experimentally, numerically and analytically. The transient pressure is measured in different types of media in order to discuss the possible effects. READ MORE