Sökning: "current doubler"
Hittade 5 uppsatser innehållade orden current doubler.
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 elektronikkonstruktionSammanfattning : 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
2. A Study on Interface Circuits for Piezoelectric Energy Harvesting
Master-uppsats, Linköpings universitet/Elektroniska Kretsar och SystemSammanfattning : 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
3. Power Enhancement in Piezoelectric Energy Harvesting
Kandidat-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)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
4. Design of Millimeter-wave SiGe Frequency Doubler and Output Buffer for Automotive Radar Applications
Magister-uppsats, Institutionen för systemteknikSammanfattning : 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
5. Theory of super power saving circuits and configurations for mixed signal CPU for smartcard application
Uppsats för yrkesexamina på grundnivå, Institutionen för systemteknikSammanfattning : 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