Search
108 articles for “Diodes”
-
High Gain High Efficiency Single Switch DC–DC Converter for Green Power Source Conversion
Abstract: Efficiency of solar cell is very low and it is preferred to be operated at low voltages; so it is difficult to supply power to a certain load. Conventional boost converter offers limited gain. So a high voltage boosting is needed. Proposed converter consists of coupled inductor and switched capacitor technique to achieve high gain without high duty ratio and turns ratio. In the magnetic field of coupled inductor and …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 3, 2018 · pp. 46–56 Read article
-
A PWM Based Series Compensator for Power System Performance Enhancement
Abstract: Enhancement of power system stability through a relatively new FACTS device named pulse width modulated series compensator (PWMSC) in the transmission line has been investigated in this article. The three-phase PWMSC is realized with a simple pulse width modulated (PWM) AC link converter consisting of four force-commutated switches and a three-phase diode bridge. The PWMSC is modeled as a continuously controllable series capacitive reactance in the transmission line of a …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 1, 2016 · pp. 12–25 Read article
-
Design and Simulation of Improved Multilevel Inverter For Solar Photovoltaic Applications
Abstract: The energy is extending rapidly, anyway will stand up to the modernization of India and fiscal turn of events, further reviving the pace of the test, especially considering the improvement of India's basic amassing approach needs. Starting late, influence age has extended rapidly, yet the business is filled by neighborhood dispersion associations, circulation frameworks and transmission frameworks, and the cash related condition is moderate and convincing. The display of photovoltaic …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 2, 2020 · pp. 34–46 Read article
-
Modeling and Simulation of a Chaotic Oscillator Using Mathematica
Abstract: This paper suggests a modified methodology for the modeling and simulation of a chaotic oscillator. Its analysis and the pertinent results of an efficient Mathematica simulation program dealing with a typical Chua's circuit are presented and discussed. The derived computer code is based on the application of state-variables in the time domain. The program yields the circuit’s currents and voltages and indicates their sensitivities to changes in the numerical values …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 1, 2021 · pp. 28–37 Read article
-
Power Factor Improvement of Boost PFC Converter for Street Light Application
Abstract: Street lighting is an integral part of urban infrastructure, ensuring public safety and urban development. The conventional street lighting systems often exhibit poor power factor characteristics, leading to inefficient energy usage and increased electricity costs. This paper presents a study focused on enhancing the power factor of a Boost Power Factor Correction (PFC) converter tailored specifically for street light applications. The Light Emitting Diode (LED) streetlights powered by AC sources …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 2, 2023 · pp. 12–18 Read article
-
Optical Filters From Silicon Dioxide Doped Dyes
Abstract: In this work silicon dioxide powder of high purity 99.5% imported from china was used to fabricate optical filters by doping the SiO2 with green and red phenol dyes with different concentrations of 0.25,0.5,0.75 and 1 in terms of mg, four samples of red SiO2 doped phenol filters and four samples of green SiO2 doped phenol filters were produced by pressing the mixture of silicon dioxide powder doped with the …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 7, Issue 1, 2020 · pp. 39–48 Read article
-
Visible Light Communication System with Various OFDM Signaling Techniques for IM/DD Channels
Abstract: Lightening using light emitting diodes is very energy efficient method for illumination. This type of communication is known as visible light communication. Further, with the use of OFDM technique, multiuser communication is also possible in VLC. But the problem with OFDM is that it has both positive and negative amplitude, due to which it is not preferable for direct detection channels. For making it worthy for VLC in all manners, …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 3, 2016 · pp. 21–24 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 Visible Light-based Indoor Navigation and Localization Solution for Visually Criticized Users
Abstract: Visible Light Communication is seen as a promising option for 5G communication because to its characteristics such as operating in a non-licensed frequency spectrum, offering high bandwidth, using minimal power, and being immune to electromagnetic interference. This property allows light waves to transmit data faster and convey more information, making VLC a promising solution for providing universal electronic navigation assistance to visually challenged individuals. VLC utilizes the visible light spectrum …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 2, 2023 · pp. 22–34 Read article
-
A Dual Material Control Gate Tunnel Field Effect Transistor for an Asymmetric Doping at Source and Drain Regions
Abstract: Double-Gate tunnel FET devices, which uses high-κ gate dielectric, are explored using realistic design parameters, showing an ON-current as high as 0.23 mA, a gate voltage of 1.8 V, an OFF-current of not more than 1 fA (neglecting gate leakage), an improved ordinary subthreshold swing of 57 mV/dec, and a lower point slope of 11 mV/dec. A dual material control gate tunnel field effect transistor for an asymmetric doping at …
Published in Journal of VLSI Design Tools and Technology · Vol. 8, Issue 3, 2018 · pp. 45–53 Read article
-
Simulation of Three Section Multilevel Inverter with Reduced Range of Switches
Abstract: Because of high generation development, the demand and excellent of electric strength ishigher than earlier than. Furthermore, due to the advancement of semiconductor, thespecification of electricity devices and strength conversion method turn out to be stricter. Oneof the energy converters that may remodel DC to AC is called inverter. An inverter is the intermedium to transmit the electricity to other electric device such as an uninterruptibleelectricity supply, servo motor, air-conditioner …
Published in Journal of VLSI Design Tools and Technology · Vol. 10, Issue 1, 2020 · pp. 15–36 Read article
-
Transient Analysis of Non-Uniform Windings or Lines with Non-Linear Termination
Abstract: The paper deals with the transient analysis of non-uniform transmission lines and machine windings with non-linear terminations. The proposed time-domain technique is characterized by a relatively small computational burden. The analytical solution of the derived system of simultaneous differential and algebraic equations is done in Mathematica. The procedure is applied to several representative case studies involving line and winding non-uniformity and/or the non-linearity of the load termination, such as diodes …
Published in Journal of VLSI Design Tools and Technology · Vol. 11, Issue 2, 2021 · pp. 42–50 Read article
-
Power Quality Improved AC-DC Sepic converter Used for Welding application
Abstract: Abstract— In this paper high frequency isolated ac-dc single phase single ended primary inductance converter (SEPIC) are proposed. Due to use of HF transformer more gain and high power is obtain. Proposed converter offers increased gain which is step-down in nature having less stress on current and also high efficiency. This paper described analysis modeling, and simulation of proposed converter. The performance is described in terms of power quality like …
Published in Recent Trends in Electronics Communication Systems · Vol. 6, Issue 1, 2019 · pp. 24–30 Read article
-
Design of Universal Coil for Medium Voltage Switchgear
Abstract: In the market, currently multiple ratings of D.C. voltages are available for the auxiliary supply of medium voltage switchgear. There is a wide range of D.C. supplies used in the medium voltage segment like 24 V, 30 V, 48 V, 60 V, 110 V, 125 V and 220 V. Normally the closing coil and tripping coil of a circuit breaker are designed for a specific auxiliary supply voltage which leads …
Published in Recent Trends in Sensor Research & Technology · Vol. 4, Issue 2, 2017 · pp. 26–30 Read article
-
Brushless DC Motor Drive System with Reduced DC-Link Capacitor for Reduction in Torque Ripple
Abstract: Presence of large value of dc-link capacitance in a brushless DC motor (BLDCM) drive system leads to an increase in the weight and volume of the system. A combination of an IGBT switch along with a small value of DC-link capacitance is proposed in this paper. BLDCM will be supplied by DC-link capacitor and rectified mains supply alternately via DC-link IGBT chopping during the time when the output voltage of …
Published in Trends in Electrical Engineering · Vol. 8, Issue 3, 2018 · pp. 19–27 Read article
-
Light Sensor Circuit
Abstract: The presence of light increases current in the photo diode or phototransistor. LM317 supplied lower voltage DC power in the circuit. Capacitors are connected in parallel with the DC output in order to filter out any high frequency AC signal coming from the noise. NE555P Timer produced accurate oscillation. BPV11 is used as a photodiode. LM311 is the comparator and the light on/off is converted to low/ high of the …
Published in Trends in Electrical Engineering · Vol. 9, Issue 2, 2019 · pp. 7–11 Read article
-
Visible and Infrared Light Detection
Abstract: A circuit is made to detect either visible or infrared light. It is designed by using different light detectors, such as, infrared phototransistor, visible phototransistor, and photoresistor. If no light is shining on the detector in the circuit, the green LED is flashing. When the light is shining on the detector, the red LED starts flashing instead of the green one. Op-amp LMC 6482 builds up a simple voltage follower …
Published in Trends in Electrical Engineering · Vol. 9, Issue 2, 2019 · pp. 20–26 Read article
-
Comparative Study of MEH-PPV, Alq3 and P3HT based OLEDs
Abstract: AbstractElectroluminescence behavior of MEH-PPV (Poly [2-methoxy-5-(2’-ethyl-hexoxy)-1, 4 phenylenevinylene]), Alq3 (Tris (8-hydroxyquinolinato) aluminium) and P3HT as the emissive layer has been investigated in the organic light emitting diode (OLED). 2D numerical simulations have been performed using finite element method from device simulation software ALTLAS from Silvaco Inc. Effect of doping concentration and thickness of active layer on device performance has been studied.Keywords: OLED, numerical simulation, P3HT, MEH-PPV, Alq3Cite this ArticleShilpi Raj, …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 25–43 Read article
-
Performance Optimizing of a Simulated Model of a Fabry-Perot based Tunable Laser Operating at 1550 nm
Abstract: AbstractThe paper presents data for an optimized Fabry-Perot tunable laser, with a wavelength tuning range of 56.3 nm, with a high output power of 17.4307 dBm. Incentive for this research has been due to the cause that Fabry–Perot semiconductor laser diodes have been fine contenders as transmitters to be used in WDM optical networks. The proposed system is capable of modulating a maximum bit rate of 26.58 Gb/s, with an …
Published in Trends in Opto-electro & Optical Communication · Vol. 4, Issue 3, 2014 · pp. 23–31 Read article
-
Design and Performance Analysis of a 635 nm Ga0.5In0.5P/(Al0.7Ga0.3)0.5In0.5P Multiple Quantum Well Separate Confinement Heterostructure Red Laser Considering Thermal Limitations
Abstract: AbstractIn this work, the performance characteristics of a GaInP - based 635 nm multiple quantum well (MQW) separate confinement heterostructure (SCH) Red laser has been obtained through computations. The material gain of Ga0.5In0.5P/(Al0.5Ga0.5)0.5In0.5P MQW edge emitting laser (EEL) has been theoretically obtained. The peak material gain obtained from the analysis has been used for analyzing the performance of the designed double-heterostructure laser. A maximum output power of 71.18 mW and …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 1, 2013 · pp. 11–17 Read article