An electrolytic capacitors used as a decoupling reservoir which restrict the lifetime of photovoltaic (PV) micro inverters. This has led to the development of several improved decoupling circuits that can reduce the capacitor value to allow the use of non electrolytic types. The project focus on selection of the minimum decoupling capacitor value for the proper operation of discontinuous conduc...

nt matter & 2012 0.1016/j.nanoen.2 thor. Tel.: +1 216 . [email protected] Abstract Nanomaterials with quasi-zero, one and two dimensionalities, including silicon nanoparticles, carbon nanotubes, titanium oxide particles and graphene flakes, have been incorporated into the conducting polymer polyaniline to form nanocomposite materials for making flexible supercapacitor sheets. Characterization of...

When a high DC voltage is applied to a capacitor with strongly asymmetrical electrodes, it generates a mechanical force that affects the whole capacitor. This is caused by the motion of ions generated around the smaller of the two electrodes and their subsequent interaction with the surrounding medium. If one of the electrodes is heated, it changes the conditions around the capacitor and influe...

In this paper, there is a combined approach which is used to compensate three stage amplifiers with ultra large capacitive loads and low power, using current mirror amplifier with split output is to decrease the occupied level of compensation capacitor that causes to lessen the occupied level of chip –area for using compensation capacitor and getting resulted in the light of better slew rate (S...

In this paper, we have proposed and designed the new structure of a RF-MEMS voltage tunable capacitor, which have two-movable parallel plates using electrostatic method and can be fabricated by the MEMS technology. Capacitance of the designed voltage tunable capacitor has from 1.0pF to 1.48pF as the applied bias voltage from 0.5V to 2.52V. The effective area and the distance of the capacitor pl...

In this work a new design of a t u n a b l e c a p a c i t o r b a s e d o n microelectromechanical system (MEMS) technology is presented. The design of high Qtunable capacitor has been accomplished through bulk micromachining process with all metal microstructure. A standard IC fabrication process (HP.5μ) is used to carry out the tunable capacitor. The main features of this high-Q MEMS tunable...

A new technique to measure a capacitor or a capacitive sensor by means of a direct sensor-to-microcontroller interface circuit that does not need a calibration capacitor is proposed. Basically, the measurement process consists of three consecutive steps of charge, discharge and charge of the capacitor under test. A non-linear equation is obtained and solved that is dependent only on known circu...

Lecturer, Department Of Electrical Engineering, L. E. College Morbi-363642, India, ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract -This paper presents application of flying capacitor multi level inverter in high voltage shunt active power filter. The proposed strategy uses three independent mul...

Nowadays, because of the need to decrease fuel consumption and greenhouse gas emissions and also their capability of exchanging power with the grid and regulating the frequency and voltage of the grid at different times of the day, electric vehicles are used more than before all across the world. It is highly important to pay attention to the efficiency, and decrease in the weight and volume of...

Design of switched capacitor circuits in scaled CMOS technologies is becoming difficult because of low device intrinsic gain and reduced power supply voltage. To solve these problems, comparator-based switched-capacitor (CBSC) circuits and zero-crossing based circuits (ZCBC) were suggested as a possible solution to the op-amp based circuits. In this thesis, we explore zero-crossing based circui...