Search
229 articles for “capacitive”
-
The Time and Frequency Response of Shielded Transformer Windings
Abstract: A distributed-parameter model is presented for the transient and frequency analysis of power transformers’ windings in the presence of electrostatic shielding, a technique occasionally applied for improving their initial voltage distribution. The s-domain solution takes into account the windings’ circuit parameters with special emphasis on the additional distributed capacitances between the windings’ conductors and the conducting shield which is connected to the windings’ line terminal. The closeness of the resulting …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 2, 2014 · pp. 33–47 Read article
-
The Frequency Characteristics of Transformer Windings Considering the Separation-Dependence of the Inter-Turn Mutual Parameters
Abstract: The paper presents a direct method for the determination of the frequency characteristics of transformer windings. The dependence of both the inter-turn mutual inductances and capacitances on the separation between these winding turns is taken into consideration. From measured data available in the literature, a formula for this dependence is derived. The voltage and current distributions along the winding will be governed by two integro-differential equations in terms of the …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 3, 2016 · pp. 72–81 Read article
-
The Energization Transients of 6-Pulse Rectifier Circuits
Abstract: This paper addresses the energization transients of 6-pulse rectifier circuits. It applies anefficient representation of the diodes in order to describe their performance in both theforward and reverse directions. Without any loss of generality, the suggested method isapplied to the classical un-controlled six-valve full-wave rectifier bridge configuration. Theeffect of the load resistance, the eventual presence of smoothing shunt-capacitors and seriesinductors as well as the waveform of the supply voltage is …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 1, 2020 · pp. 18–30 Read article
-
Harmonic Analysis of 6-Pulse Diode Bridge Rectifier Circuits
Abstract: This paper analyzes the steady-state harmonic performance of the six-diode, 3-phase rectifier bridge circuits. A procedure for determining the frequency spectra of the different voltages and currents within the bridge circuit, resulting from a 60-Hz 3-phase supply, is presented. The effect of the smoothing shunt-capacitor is also demonstrated. Based on a Mathematica code, the paper presents the results of a comprehensive list of case studies. The procedure can handle unsymmetrical …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 2, 2020 · pp. 1–10 Read article
-
Efficient Technique for Analyzing Non-Uniform Transformer Windings
Abstract: This paper addresses the electromagnetic transients and the frequency characteristics of non-uniform transformer windings exhibiting inter-winding mutual circuit parameters. The dependence of the winding inductances and capacitances on the location along the winding is incorporated in the governing Kirchhoff’s voltage and current equations with the voltages and currents as unknowns. These unknowns will then be determined through the application of algebraic solution techniques in order to get closed-form analytical voltage …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 3, 2021 · pp. 1–8 Read article
-
Design Simulation and Analysis of Zeta Converter for Speed Control of BLDC Motor
Abstract: In recent years, usage of variable speed drive systems has been increasing in various low power applications like automobile industries, domestic appliances, etc. To save the energy consumption of devices, there is a necessity in the usage of green and eco-friendly electronics. For improvement in power factor and speed control, BLDC with Zeta converter is proposed in this paper. Zeta converter is used for voltage regulation due to its wide …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 3, 2021 · pp. 17–32 Read article
-
Signal Integrity Analysis of Single Walled Carbon Nano Tube based Interconnects at 32 nm Technology Node
Abstract: The rising demands for ultra-high-speed processors and portable devices have made the transistor and interconnect scaling a challenging issue in present days. In this work, the impedance parameter of copper and CNT based interconnects are calculated at 32 nm technology node for different lengths. The performances of CNT based interconnects are analyzed and compared with Cu based interconnects in terms of crosstalk. The conventional copper interconnects are not able to …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 1, 2018 · pp. 33–42 Read article
-
SPICE Modeling of LDMOSFET Transistor
Abstract: AbstractHigh voltage integrated circuits, these days are the most viable alternatives to discrete circuits for various applications. The popular amongst them is the lateral double diffused MOS transistor (LDMOS). It is based on the lightly doped drain (LDD) concept. The constraint that occurred in modeling LDMOS is to minimize the on-resistance along with maintaining a high breakdown voltage. To achieve the objective, the help of RESURF (Reduced Surface Field) concept …
Published in Journal of Semiconductor Devices and Circuits · Vol. 3, Issue 1, 2016 · pp. 42–57 Read article
-
Digital Front-End Architecture of ECG Acquisition System with 0.5V Supply
Abstract: AbstractDue to the popularity of portable electronic products, low power systems have attracted more attention in recent years. Dynamic power consumption remains to be the biggest contributor to the total power consumption of a hardware design. A new power efficient electrocardiogram acquisition system that uses a fully digital architecture to reduce the power consumption and chip area has been proposed in this paper. The design of analog-to-digital converters (ADCs) is …
Published in Journal of Semiconductor Devices and Circuits · Vol. 3, Issue 2, 2016 · pp. 11–20 Read article
-
Performance Analysis of Bootstrapping Techniques to Overcome the Threshold Voltage Drop in NMOS Logic Design
Abstract: Abstract: In this paper, we study the concept of bootstrapping techniques and analyzed its performance in digital CMOS circuits. These bootstrapping circuits are used to increase the gate voltage of transistors so that drain node voltage can be pulled high to overcome the threshold voltage drop problem in NMOS logic design. Also discuss the drawback associated with voltage bootstrapping techniques in NMOS logic design that is sneak path problem between …
Published in Journal of Semiconductor Devices and Circuits · Vol. 6, Issue 1, 2019 · pp. 15–20 Read article
-
USB Charger Using Pedal Power
Abstract: Profound cyclists will no doubt have every now and then thought that is would be agreeable to have some special type of on-board power supply to charge a mobile device such as a phone or a satnav even though on the road. The project describes how this can be achieved quite simply using power from the bicycle’s dynamo and a switching regulator. The alternating voltage delivered by the bicycle’s dynamo …
Published in Journal of Semiconductor Devices and Circuits · Vol. 2, Issue 3, 2015 · pp. 1–3 Read article
-
Comparative Study of Cold Formed Steel Sections with Hot Rolled Steel Sections
Abstract: Structural steel has become the best alternative for concrete in present construction industry. Hot Rolled steel Sections (HRS) available in market have standard shapes and sizes where as Cold Formed steel Sections (CFS) are produced in various shapes and sizes as per the needs of customer. A comparative study of cold formed sections and hot rolled section with respect to its axial load carrying capacityas a column is attempted. Hot …
Published in Journal of Structural Engineering and Management · Vol. 1, Issue 3, 2014 · pp. 1–4 Read article
-
Effect of Annealing Temperature on the Structural, Morphological and Electrochemical Properties of Ruthenium Oxide Electrodes
Abstract: Transition metal oxide thin films are in great demand for a variety of technical applications, Ruthenium oxide is one of them having distinct structural, optical, chemical, and electrical properties. The structural and morphological characterization of Ruthenium oxide thin film electrodes created using the sol-gel spin coating process is covered in this work. For annealing, temperatures between 200°C and 900°C were employed. To examine electrochemistry, cyclic voltage measurement and chronopotentiometry were …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 2, 2023 · pp. 15–24 Read article
-
Mitigation of Harmonics in Industries using a Multilevel Shunt Active Power Filter
Abstract: The vast development in power electronic equipments causes higher harmonics in the distribution line in order to reduce the harmonics. This work proposes a design of Multi-Level Inverter (MLI) based Shunt Active Filter (SAF) intended to sort out the presence of harmonics in the distribution line. This proposed SAF utilizes three level diodes clamped MLI as VSI. d-q theory is employed for reference signal generation. In order to regulate the …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 8, Issue 3, 2021 · pp. 39–50 Read article
-
A Novel Approach Integrated Dc To Dc Fast Charging Module
Abstract: This paper presents a wide variation of input dc voltage. It is a “step-up” inverter, meaning that only one power stage works at high frequency in order to achieve minimum switching loss. When input dc voltage is lower than the magnitude of the ac voltage, it is a voltage-source inverter, and on it is current-source inverter in the other mode. The leakage current caused by the capacitance can be reduced …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 9, Issue 2, 2022 · pp. 26–32 Read article
-
Hybrid Energy Storage System for Electric Vehicle
Abstract: These days, fuel cell hybrid vehicles are used to reduce the amount of lubricant required and prevent pollution from burning fossil fuels; as a result, large research centers and enterprises are interested in conducting research and development on this topic. Since battery-operated vehicles have a slower thermodynamic and electrochemical response than fuel cell-powered vehicles, hybrid energy storage systems for electric vehicles must be designed using a bidirectional DC-DC converter, batteries, …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 3, 2023 · pp. 31–40 Read article
-
Memristor based Material Implication Logic for Implementation of Basic logic Gates and Circuits
Abstract: A physical memristor was realized a few years back by Hewlett Packard labs. Instantly it became the topic of interest for many scientists and researchers. Memristor has joined resistor, capacitor and inductor in the list of basic two-terminal passive circuit elements. Field Programmable Gate Arrays (FPGAs) have become a major choice of technology for the implementation of various digital circuits because they offer various features such as quick time to …
Published in Journal of VLSI Design Tools and Technology · Vol. 8, Issue 1, 2018 · pp. 17–22 Read article
-
Memristor Modelling for Common Source Amplifier Using 180 nm Technology
Abstract: The objective of this research paper is on memristor modeling for common source amplifier circuit using cadence virtuoso tool at gpdk 180 nm technology. A memristor is the fourth element count after resistor, inductor and capacitor in fundamental electrical circuits assumption is proposed by Leon Chua, its characteristics is based on already occurred principles of voltages (V), current (I), flux (ᵩ) and charge (q). Ohm’s law states relation voltage to …
Published in Journal of VLSI Design Tools and Technology · Vol. 5, Issue 3, 2015 · pp. 45–54 Read article
-
A Low Power Variable Gain Amplifier for Biomedical Application
Abstract: This paper describes the design and simulation of low power variable gain amplifier used for biomedical application like hearing aid, Electronic Cardiograph and neural recording system. The MOS transistor is designed to operate in subthreshold region for low power application. The gain of amplifier is changed by selecting different values of input capacitor in the frequency range of 20 Hz–20 KHz. The simulated total power dissipation is 3µW. The gain …
Published in Journal of VLSI Design Tools and Technology · Vol. 4, Issue 3, 2014 · pp. 7–12 Read article
-
Design and Implementation of Low Noise Amplifier using 90 nm MOS Technology for Bluetooth
Abstract: In the era of Miniaturization it is necessary that analog field develops at par with the digital world. To design RF circuit on the single chip it is necessary that noise performance of active semiconductor devices are studied and configure the devices in such a way that noise gets minimized. In this paper various kinds of noise in the devices are explained at a brief. Low Noise Amplifier for Bluetooth …
Published in Journal of VLSI Design Tools and Technology · Vol. 4, Issue 3, 2014 · pp. 13–19 Read article