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Browsing by Author "Kalingamudali, S.R.D."

Browsing by Author "Kalingamudali, S.R.D."

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  • A Study of CuInS2 Thin Films for Photovoltaic Applications 
    Wijesundera, R.P.; Nadesalingam, M.P.; Siripala, W.; Jayasuriya, K.D.; Kalingamudali, S.R.D.; Jayanetti, J.K.D.S.; de Silva, K.T.L. (Proceedings of the Technical Session of Institute of Physics, 1999)
    Thin films of copper indium disulphide (CuInS2) on Ti Substrate were prepared by annealing potentiastatically electrodeposited Cu-In alloy in H2S gas at 5500 C. Films were characteristised by X-ray diffraction (XRD), ...
  • Advantages of the use of solar cells and light emitting diodes (LED) for traffic signal lights for the current power crises in Sri Lanka 
    Kalingamudali, S.R.D.; Kalingamudali, M.L. (2002)
    During power failures and power cuts road users suffer immense difficulties due to non-availability of traffic signal lights. Use of solar cells with lead acid accumulators to provide required power and the use of light ...
  • An inexpensive universal serial bus interfaced home automation system 
    Wijesundera, R.P.; Abeyratne, M.D.G.M.; Kalupahana, I.U.; Buddhika, W.A.P.; Kumara, S.D.; Jayatissa, N.W.K.; Harambearachchi, J.C.; Kalingamudali, S.R.D. (IET Sri Lanka Network-19th Annual conference, 2012)
  • Analysis of Impedance Matching Technique for Novel Supercapacitor Assisted PV Systems 
    Piyumal, P.L.A.K.; Ranaweera, A.L.A.K.; Kalingamudali, S.R.D.; Kularatna, N. (IEEE Computer Society, 2020-10)
    To extract the maximum power from a photovoltaic (PV) system, the maximum power point (MPP) of the PV array must be tracked continuously. A directly coupled load with the PV array does not track the MPP of the PV array ...
  • Challenges of Defending Maritime Domain of Sri Lanka 
    Kotakadeniya, H.M.S.K.B.; Kalingamudali, S.R.D.; Bulathsinghala, G. (University of Kelaniya, 2012)
    The Indian Ocean is rapidly surpassing both the Atlantic and Pacific Oceans as the world’s busiest and most critical trade corridor, triggering several dramatic changes in the region. With the growth in legitimate ...
  • Computational Study of I-V characteristics of ITO/Cu2 O/Metal junctions, Technical Session of Institute of Physics 
    Wijesinghe, W.M.P.L.; Siripala, W.; Jayasuriya, K.D.; Kalingamudali, S.R.D. (Processing of the Technical Session of Institute of Physics, 1999)
    A theoretical model for current-voltage (I-V) characteristics of back-to-back diode systems was developed using the ideal diode equation. A computer model was developed using the language C++ to fit the experimental data ...
  • Computational Study of I-V characteristics of ITO/Cu2/Metal junctions 
    Wijesinghe, W.M.P.L.; Siripala, W.; Jayasuriya, K.D.; Kalingamudali, S.R.D. (1999)
    A theoretical model for current-voltage (I-V) characteristics of back-to-back diode systems was developed using the ideal diode equation. A computer model was developed using the language C++ to fit the experimental data ...
  • Construction of a Near Ideal Nanoammeter 
    Wijesundera, R.P.; Kalingamudali, S.R.D.; Jayasuriya, K.D. (1998)
    A near ideal ac/dc nanoammeter was constructed using two operational amplifiers (op-amp) and a voltmeter. Small currents were converted into a voltage by the first op-amp and this was amplified into a larger voltage by ...
  • Current gain increase in AlGaAs/GaAs heterojunction bipolar transistors using AlGaAs layer overgrowth 
    Kalingamudali, S.R.D.; Wismayer, A.C.; Woods, R.C.; Roberts, J.S. (Applied Physics Letters, 1994)
    Reduction of the surface recombination current components in Npn AlGaAs/GaAs heterojunction bipolar transistors has been achieved by overgrowing the emitter?mesas with an AlGaAs layer approximately 0.5 ?m thick. It was ...
  • Design and characterization of a parametric speaker using Pulse Width Modulation method 
    Jayawardana, D.G.D.D.,; Ranaweera, A.L.A.K.; Kalingamudali, S.R.D. (Faculty of Science, University of Kelaniya, Sri Lanka, 2020)
    This study focuses on designing and characterization of a parametric speaker. It is used to convert sound waves that spread out in all directions emitted from a sound source into a narrow sound beam to reduce noise pollution. ...
  • Design and Implementation of a Web-Based Faculty Information System 
    Kumara, K.H.; Munasinghe, L.; Jayasuriya, K.D.; Dias, N.G.J.; de Silva, C.H.; Kalingamudali, S.R.D. (University of Kelaniya, 2006)
    Although Information Systems (IS) are valuable elements for organizations, the private and public sectors in Sri Lanka are reluctant to use IS for decision making, organizing and classifying data, processing transactions, ...
  • Design and Implementation of Smart Standalone Gas Fire Security System for Domestic Usage 
    Rajapaksha, R.M.I.U.; Perera, P.S.H.; Nandasena, P.K.D.M.; Gunarathna, E.P.G.T.K.; Pieris, T.P.D.; Kanishka, G.; Ranaweera, A.L.A.K.; Kalingamudali, S.R.D. (19th Conference on Postgraduate Research, International Postgraduate Research Conference 2018, Faculty of Graduate Studies,University of Kelaniya, Sri Lanka, 2018)
    Liquid Petroleum Gas (LPG) fire security system for domestic gas cylinders has been designed and prototype is implemented. The proposed system automatically takes preventive measures in case of gas leakage. It includes an ...
  • Design of an auto disconnecting regulator and a safety switch to prevent domestic gas leakages 
    Rajapaksha, R.M. I. U.; Perera, P.S.H.; Nandasena, P.K.D.M.; Gunarathna, P.S.T.K.; Kanishka, P.P.D. Gihan; Ranaweera, A.L.A.K.; Kalingamudali, S.R.D. (Department of Industrial Management, Faculty of Science, University of Kelaniya, Sri Lanka, 2020)
    There is a growing demand for research in various aspects of smart homes. Automated security systems are an integral part of smart homes. Liquid Petroleum Gas (LPG) is one of the popular fuels used in domestic cooking. ...
  • Design of an Inexpensive Digital Watt-hour Meter 
    Chandana, A.W.S.; Wijesundera, R.P.; Jayasuriya, K.D.; Kalingamudali, S.R.D. (2003)
    An inexpensive digital watt-hour meter has been designed and tested using MCap 7 simulation package since commercially available digital watt-hour meters are very expensive. One of the major usages of watt-hour meters is ...
  • Design of an Inexpensive GPIB Interfaced Voltage Source 
    Kalingamudali, S.R.D.; Jayasingha, A.M.R. (2006)
    An inexpensive voltage source that can be controlled by a computer using the general purpose interface bus (GPIB) controller is designed since commercially available GPIB interfaced voltage sources are very expensive. The ...
  • Designing of an Economical Computer Interfaced Current Source 
    Kalingamudali, S.R.D.; Nikapitiya, N.Y.J.B. (University of Kelaniya, 2008)
    An economical current source which can be controlled by a computer using the parallel port is designed. The Switch Mode Power Supply (SMPS) technique is used to construct the power supply unit of the current source. The ...
  • Development of electronics from vacuum tubes to intergrated circuits 
    Kalingamudali, S.R.D. (Science to Society (YSF Science Magazine, NASTEC), 2004)
  • Effects of lightning and possible health hazards due to the erection of telecommunication towers 
    Maduranga, J.A.K.; Kalingamudali, S.R.D.; Jayaratne, K.P.S.C. (Wayamba University of Sri Lanka, 2016)
    The health hazards due to lightning and electromagnetic radiations in the neighbourhood of telecommunication towers were studied. Six tower sites were selected for the investigations from the areas covering the Sri Lankan ...
  • Efficiency Optimization of Supercapacitor Assisted Low Dropout (SCALDO) Regulators 
    Jayasekara, L. D. P. S.; Piyumal, P. L. A. K.; Ranaweera, A L A K.; Kalingamudali, S.R.D. (IEEE, 2020-12)
    This study was primarily focused on presenting a novel method to enhance the efficiency of Supercapacitor Assisted Low Dropout (SCALDO) regulators. The main objective was to study SCALDO regulators under a specifically ...
  • Electronic Scoreboard for Basketball games 
    Kalingamudali, S.R.D.; Dedigamuwa, G.S. (2002)
    An electronic scoreboard has bean designed and fabricated for the basketball game. Although this has been specifically designed for the basketbaU game. this can also be used for other games such as Rugby. Hockey, Boxing ...

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