Sökning: "SMPS"

Visar resultat 1 - 5 av 15 avhandlingar innehållade ordet SMPS.

  1. 1. High Speed (MHz) Switch Mode Power Supplies (SMPS) using Coreless PCB Transformer Technology

    Författare :Hari Babu Kotte; kent Bertilsson; Bengt Oelmann; Per Karlsson; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SMPS; High Frequency converters; Coreless PCB transformers; Electrical engineering; Elektroteknik; Electronics; Elektronik;

    Sammanfattning : The most essential unit required for all the electronic devices is the Power Supply Unit (PSU). The main objective of power supply designers is to reduce the size, cost and weight, and to increase the power density of the converter. LÄS MER

  3. 2. Hydrolytic Synthesis and Physicochemical Properties of TiO2 Nanoparticles: Fundamentals and Applications

    Författare :Jenny Perez-Holmberg; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Titanium dioxide TiO2 ; Nanoparticles; Synthesis; Hydrolysis; Titanium tetrachloride TiCl4 ; Anatase; Brookite; DLS; ES-SMPS; XRD; Collective diffusion; Interfacial processes;

    Sammanfattning : Titanium dioxide (TiO2) nanoparticles were synthesized via the hydrolysis of TiCl4 in order to produce clean, surfactant-free oxide surfaces. By controlling the synthesis and aging conditions, stable particles with well-defined size distributions were obtained. LÄS MER

  4. 3. Multilayered Coreless Printed Circuit Board (PCB) Step-down Transformers for High Frequency Switch Mode Power Supplies (SMPS)

    Författare :Radhika Ambatipudi; Kent Bertilsson; Bengt Oelmann; Torbjörn Thiringer; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multilayered Coreless PCB transformers; High frequency converters; Electrical engineering; Elektroteknik; Electronics; Elektronik;

    Sammanfattning : The Power Supply Unit (PSU) plays a vital role in almost all electronic equipment. The continuous efforts applied to the improvement of semiconductor devices such as MOSFETS, diodes, controllers and MOSFET drivers have led to the increased switching speeds of power supplies. LÄS MER

  5. 4. On the Electrolyte Induced Aggregation of Concentrated Silica Dispersions - An Experimental Investigation Using the Electrospray Technique

    Författare :Ann-Catrin J. H. Johnsson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Colloidal silica dispersion; aggregation; gelation; electrospray ES ; scanning mobility particle sizer SMPS ; synchrotron radiation small-angle x-ray scattering SR-SAXS ; electron microscopy EM ; dynamic light scattering DLS ; particle morphology; ion specificity; gel layer;

    Sammanfattning : Gels are weak, solid-like structures that arise when colloidal particles aggregate to form a network of particle clusters. A variety of colloidal systems that are important scientifically as well as in industrial applications are capable of gel formation, e.g. globular protein solutions, colloid-polymer mixtures, and metal oxides. LÄS MER

  7. 5. Protein and lipid interactions within the respiratory chain : Studies using membrane-mimetic systems

    Författare :Tobias Nilsson; Peter Brzezinski; Petra Hellwig; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Cytochrome c oxidase; ATP synthase; Bioenergetics; membrane-mimetics; Rcf1; liposomes; oxidative phosphorylation; lipids; protein-protein interactions; Biochemistry; biokemi;

    Sammanfattning : Energy conversion from nutrients to ATP is a vital process in cells. The process, called oxidative phosphorylation (OXPHOS) is performed by a combination of membrane-bound proteins. These proteins have been studied in great detail in the past, however much is still unknown about how they interact with each other. LÄS MER