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Visar resultat 1 - 5 av 12 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Off-State Stress Effects in AlGaN/GaN HEMTs : Investigation of high-voltage off-state stress impact on performance of and its retention in hybrid-drain ohmic gate AlGaN/GaN HEMTs

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ivan Krsic; [2023]
    Nyckelord :HEMT; GaN; off-state stress; memory effects; drain leakage current; dynamic RDSon; threshold voltage instabilities; charge redistribution; HEMT; GaN; stress i avslaget tillstånd; minneseffekter; läckströmmen; dynamisk RDSon; instabiliteten hos styrets tröskelspänning; omfördelningen av laddningar;

    Sammanfattning : High electron mobility transistors (HEMTs) realized using AlxGa1-xN/GaN are relatively new technology which is prominent for high-speed and high-power applications. Some of the main problems with this technology were identified as dynamic RDSon, current collapse and threshold voltage instabilities due to the off-state stress. LÄS MER

  3. 2. Developing a portable, customizable, single-channel EEG device for homecare and validating it against a commercial EEG device

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Máté Károly Tóth; [2023]
    Nyckelord :Electroencephalography EEG ; Portable EEG; Single-channel EEG; Commercial EEG; Brain-machine interface; Prototype development; Elektroencefalografi EEG ; Bärbar EEG; Enkanaligt EEG; Kommersiellt EEG; Hjärna-maskin-gränssnitt; Prototyputveckling;

    Sammanfattning : There are several commercial electroencephalography (EEG) devices on the market; however, affordable devices are not versatile for diverse research applications. The purpose of this project was to investigate how to develop a low-cost, portable, single-channel EEG system for a research institute that could be used for neurofeedback-related applications in homecare. LÄS MER

  4. 3. Development of a Low-level laser therapy product for home use : With focus on function and aesthetic design

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för ekonomi, teknik, konst och samhälle

    Författare :Vendela Sandström; Westerberg Klara; [2023]
    Nyckelord :Industrial design; human-centered design; usability; low-level laser therapy; well-being; Teknisk design; human-centered design; användbarhet; low-level laser therapy; välbefinnande;

    Sammanfattning : Today, 27 out of 1000 individuals suffer from neck pain, affecting both individuals and society (Kazeminasab et al., 2022). These problems are most prevalent in the Scandinavian countries, with Sweden being one of the countries experiencing the greatest increase (Safiri et al., 2020). LÄS MER

  5. 4. Coexistence of Dual Inductive Wireless Power Transfer Systems

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Eneas Hållsten; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Wireless power transfer is emerging into everyday life. The idea is to create a more convenient way of charging, or at least powering, devices. LÄS MER

  7. 5. Emergency remote teaching and its challenges in the initial stages of Covid-19

    Uppsats för yrkesexamina på grundnivå, Malmö universitet/Fakulteten för lärande och samhälle (LS)

    Författare :Kujtesa Doko; [2021]
    Nyckelord :Digital tools; emergency remote teaching; virtual classes;

    Sammanfattning : This study investigates teachers and students challenges in online classes during Covid-19.  Also, the effectiveness of using technology devices in online English classrooms. There are frequent opportunities for students to be actively engaged in the classroom whereas in the online classroom these differences respond a little diversely. LÄS MER