Power quality is one of major problems in the presence era. It has become importance especially, with the introduction of sophisticated devices, whose performance is very sensitive to quality of power supply. power quality problem is an occurrence manifested as a nonstandard voltage,current,or frequency that results in a failure of end use euipement.One of the major problem deal here is the vol...

Near-Threshold Voltage Computing (NTC), where the supply voltage is only slightly higher than the transistors’ threshold voltage, is a promising approach to push back the many-core power wall. A key NTC shortcoming is the higher sensitivity to parameter (process, supply voltage, temperature) variation. This report introduces a μ−architectural model to characterize increased sensitivity to proce...

A low voltage square root domain filter based on the MOSFET square law is proposed in this thesis. Through HSPICE simulation, the extendibility and the reliability of the design procedure are verified. Furthermore, the supply voltage is successfully reduced down to 0.9V by the Flipped Voltage Follower (FVF) low-voltage technique without regarding the performance of the filters. The proposed fil...

in this study, a novel variable impedance control for a lower-limb rehabilitation robotic system using voltage control strategy is presented. the majority of existing control approaches are based on control torque strategy, which require the knowledge of robot dynamics as well as dynamic of patients. this requires the controller to overcome complex problems such as uncertainties and nonlinearit...

This work analyzes the stochastic behavior of writing to embedded flash memory at voltages lower than recommended by a microcontroller’s specifications in order to reduce energy consumption. Flash memory integrated within a microcontroller typically requires the entire chip to operate on a common supply voltage almost twice as much as what the CPU portion requires. Our software approach allows ...

Multi-Supply voltage design using Cluster Voltage Scaling (CVS) is an effective way to reduce power consumption without performance degradation. One of the major issues in this method is performance and power overheads due to insertion of Level Converting Flip-Flops (LCFF) at the interface from low-supply to high-supply clusters to simultaneously perform latching and level conversion. In this p...

There is rapid expansion in the use of short range digital wireless systems [1], using the license-free allocations around 915 MHz in the USA and 869 MHz in Europe that permit up to 1 watt output power. These RF systems now use digital signal processing (DSP) for modulation and demodulation so to get better circuit packing density, and take advantage of finer IC process geometries that generall...

-----------------------------------------------------ABSTRACT----------------------------------------------------In recent years, multilevel inverters have gained much attention in the application areas of medium voltage and high power owing to their various advantages such as lower common mode voltage, lower voltage stress on power switches, lower dv/dt ratio to supply lower harmonic contents ...

A new model for estimating dynamic power dissipation in CMOS combinational circuits at differing voltages is presented in this paper. The proposed model deals with power dissipation of circuits at saturation frequencies, where the output voltage does not reach 100% of the supply voltage and the output voltage waveform is almost a triangular waveform. In this paper we show that the dynamic power...

The electric power distribution system must be designed to operate and supply acceptable level of electrical energy to customers. Power utilities must ensure that the power supply to customers is with voltage magnitude within standard levels. Other features like minimal interruptions and minimal system power loss also must be considered. Hence, the quality and reliability of supply must be main...