Sökning: "current doubler"

Hittade 5 uppsatser innehållade orden current doubler.

  1. 1. 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

    Kandidat-uppsats, Mittuniversitetet/Institutionen för elektronikkonstruktion

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

    Sammanfattning : 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. LÄS MER

  3. 2. A Study on Interface Circuits for Piezoelectric Energy Harvesting

    Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System

    Författare :Tang Honghao; [2018]
    Nyckelord :interface circuit; PEH system; switch;

    Sammanfattning : A piezoelectric energy harvesting (PEH) system can harvest electrical energy from ambient vibration energy. In a PEH system, the interface rectifier circuit is critical because it converts AC from the output of piezoelectric harvester to DC that can power the load. LÄS MER

  4. 3. Power Enhancement in Piezoelectric Energy Harvesting

    Kandidat-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Zohreh Alaei; [2016]
    Nyckelord :;

    Sammanfattning : Piezoelectric energy harvesting has been around for almost a decade to generate power from the ambient vibrations. Although the generated power is very small, but there are several ways to increase and enhance the generated power. LÄS MER

  5. 4. Design of Millimeter-wave SiGe Frequency Doubler and Output Buffer for Automotive Radar Applications

    Magister-uppsats, Institutionen för systemteknik

    Författare :Amjad Altaf; [2007]
    Nyckelord :Automotive Radar; VCO; Frequency Multiplier; SiGE; ACC; Millimeter-wave;

    Sammanfattning : Automotive Radars have introduced various functions on automobiles for driver’s safety and comfort, as part of the Intelligent Transportation System (ITS) including Adaptive Cruise Control (ACC), collision warning or avoidance, blind spot surveillance and parking assistance. Although such radar systems with 24 GHz carrier frequency are already in use but due to some regulatory issues, recently a permanent band has been allocated at 77-81 GHz, allowing for long-term development of the radar service. LÄS MER

  7. 5. Theory of super power saving circuits and configurations for mixed signal CPU for smartcard application

    Uppsats för yrkesexamina på grundnivå, Institutionen för systemteknik

    Författare :Anders Kleist; [2004]
    Nyckelord :Electronics; charge pump; sleep-mode; level shifter; cholesteric; liquid crystal; smartcard; DC-DC converter; MTCMOS; display driving; assembler; voltage doubler; low power; Elektronik;

    Sammanfattning : Designing an application specific integrated circuit (ASIC) must be starting with careful preparations, otherwise the chip will not be as good as possible. The theoretical studies must cover everything from the chip circuits to the application structure. LÄS MER