This letter proposes a control strategy for reducing ripple current in DC-link capacitor of single-phase uninterruptible power supplies (UPS). The proposed method aims to reduce the by difference between input and output instantaneous power. waveform should satisfy harmonic regulation be as close possible load current. Therefore, an auxiliary buck chopper was added compensate capacitor. Experim...

Abstract: The LC resonator-based passive pressure sensor attracts much attention because it does not need a power source or lead wires between the sensing element and the readout system. This paper presents the design and manufacturing of a passive pressure sensor that contains a variable capacitor and a copper-electroplated planar inductor. The sensor is fabricated using silicon bulk micro-mac...

Theoretical performance limits of twophase switched-capacitor (SC) dc-dc converters are discussed in this paper. For a given number of capacitors k, the complete set of attainable dc conversion ratios is found. The maximum step-up or stepdown ratio is given by the k t h Fibonacci number, while the bound on the number of switches required in any SC circuit is 3k 2. Practical implications, illust...

Transient response performance is very important in DC-DC converters. It measures how steady the output voltage is maintained when the load changes suddenly. For single inductor dual output (SIDO) converters (1)~(4) that work in continuous conduction mode (CCM), the transient response affects cross-regulation: if the load of one sub-converter changes, the output voltage of the other sub-convert...

Electrolytic capacitors are extensively used in filtering and power decoupling in power electronic converters. Low cost and high energy density of these capacitors make them popular. However, these capacitors degrade with age due to heating and evaporation of electrolyte. This process may take about 2 to 7 years depending on the application, ambient conditions and capacitor construction. This p...

The current-output fluxgate may be tuned by using a serial capacitor. Such tuning increases the sensor sensitivity in the situation when the pick-up coil has a low number of turns. We achieved a signal/feedthrough ratio improvement by a factor of 5. The measured parameters fit the simplified theoretical model within 20% deviation

A hydrogel-based dual film coating is electrofabricated for transducing bio-relevant chemical information into electronical output. The outer film has a synthetic biology construct that recognizes an external molecular signal and transduces this input into the expression of an enzyme that converts redox-inactive substrate into a redox-active intermediate, which is detected through an amplificat...