A conventional high power DC power supply systems consist of a three-phase diode rectifier followed by a high frequency converter to supply loads at regulated DC voltage. These rectifiers draw significant harmonic currents from the utility, resulting in poor input power factor. In this paper, a DC power supply based on dual-bridge matrix converter (DBMC) with reduced number of switches is p...

Induction motor is the most popular load in the industry, it is very important to study about the effects of voltage quality on induction motor performance. One of the most important voltage quality problems in power system is voltage unbalance. This paper evaluates and compares two methods including finite element method (FEM) and equivalent electrical circuit simulation for investigation ...

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1. Introduction A system on chip (SoC), which has various functions on a LSI, has been developed for a variety of applications by the submicron technologies. Especially, implantable and/or attachable neural sensor chips, which are implemented by the SoC, attract a lot of interest [1]. The neural sensor chip, which includes with a low-noise amplifier, analog-to-digital converter (ADC), transceiv...

A low voltage switched-capacitor circuit that generates an almost constant reference current across process, voltage and temperature (PVT) is proposed. The reference voltage is generated by a low voltage band-gap circuit. The output reference current is obtained by applying the generated reference voltage to a low voltage V – I converter. The resistor in the proposed V – I converter is further ...

A high power supply rejection ratio (PSRR) bandgap voltage reference (BGR) which is used in the signal processing circuit of energy harvesters is presented in this paper. The PSRR of the BGR is improved by adding a pre-regulating circuit and a low pass filter. The pre-regulating circuit mainly improves the BGR PSRR at low frequency and the low pass filter mainly improves the BGR PSRR at high fr...

In this paper, low threshold voltage (Vt) “natural” transistors, available in some n+/p+ dual poly gate CMOS/ BiCMOS processes [1], are proposed for low voltage switched capacitor circuit design. The impact of the subthreshold off-current of these low devices on the performance of analog switched-capacitor (SC) circuits is analyzed. Methods for reducing the subthreshold offcurrent in analog swi...

Solid-state circuit breakers (SSCBs) are designed to interrupt fault currents typically several orders faster than its electromechanical counterparts. However, such an ultrafast switching operation would produce a dangerous overvoltage which might cause damages SSCBs and other elements in the system. This paper proposes novel snubber for suppressing overvoltage. It takes advantages of both resi...

This article is present high-precision multi-wave rectifier circuit operating in low voltage + 1.5 Volt current modes by CMOS technology 0.5 μm, receive input and give output in current mode, respond at high frequency period. The structure compound with high-speed current comparator circuit, current mirror circuit, and CMOS inverter circuit. PSpice program used for confirmation the performance ...

A low-voltage low-power analog CMOS exponential function generator is designed in 0.18μm CMOS standard technology. The proposed circuit uses Taylor’s approximation concept and consists of a linear low-voltage transconductance with two linearization techniques and one low-voltage current squarer circuit for performing this approximation method. Simulation results using HSPICE shows 60 dB-linear ...