The series capacitor buck converter is a dc-dc converter topology that uniquely merges a switched capacitor circuit and a multiphase buck converter. Many of the challenges faced by conventional buck converters are overcome by this converter topology. This enables efficient, high frequency operation and significantly smaller solution size. The series capacitor buck converter has beneficial chara...

This paper proposes a low power EHC that performs synchronous energy conversion on a tri-plate variable capacitor to improve the maximum achievable power. A tri-plate macro electrostatic generator with capacitor variation of 405 pF to 1.15 nF and 405 pF to 1.07 nF on two complementary adjacent capacitors operating 180° out of phase at 98 Hz is fabricated and used in the characterization of the ...

In this paper, battery/ultracapacitor hybrid energy storage system (HESS) is proposed for electric vehicles, it is used to large dc-dc converter by using ultra capacitor and battery. It is also use the dc link for the purpose of maintain the peak voltage value. By the help of battery and ultracapacitor they are operate. The battery is used to charging the capacitor in case of discharge the capa...

A Switched Capacitor circuit is an electronic circuit element used for discrete time signal processing. It works by moving charges into and out of capacitors when switches are opened and closed. Usually, nonoverlapping signals are used to control the switches, so that not all switches are closed simultaneously. Filters implemented with these elements are termed switched capacitor filters. Unlik...

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...

A high-speed compact silicon modulator based on the lateral capacitor configuration is experimentally demonstrated with low-power consumption and 3 dB modulation depth. The capacitor layout is introduced to scale down the total modulator capacitance to 30x10(-15) F, which effectively reduces the rf power consumption to 0.54 pJ/bit. Exploiting the slow group velocity of light in the slot photoni...

In order to miniaturize a very low-level dc current amplifier and to speed up its output response speed, we proposed to employ the switched-capacitor circuit (SCC) as its negative feedback circuit, instead of the conventionally used high-ohmage resistor. However, in the case of using SCC, the output waveform had unnecessary components. To decrease the effect of these components and to speed up ...

In this paper, we present a Solar Energy harvesting and storing system. The solar energy is converted to electric charge by photosensitizing film and the charge generated is stored between the upper membrane and lower membrane of a capacitor. A PZT material based capacitor is used to retain the charge. The proposed system not only harvest energy from solar sources but also stores the charge bot...

The charge of the electron can be determined by simply placing a known number of electrons on one electrode of a capacitor and measuring the voltage, Vs, across the capacitor. If Vs is measured in terms of the Josephson volt and the capacitor is measured in SI units then the fine-structure constant is the quantity determined. Recent developments involving single electron tunneling, SET, have sh...

Capacitors in power systems are used to supply reactive power for the purpose of loss minimization and voltage profile improvement. Besides, appropriate placement of capacitors is also important so as to ensure that system power loss and total capacitor costs is reduced. Most of the capacitor placement techniques assume that the system is balanced and ignore the effect of harmonics. In this pap...