http://nopr.niscair.res.in/handle/123456789/5035 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/5064 Title: Automated measurements of junction characteristics to evaluate parameters for semiconductor diodes <br/> <br/>Authors: Patel, P K; Kheraj, V A; Panchal, C J; Desai, M S; Vakil, P D; Patel, K J <br/> <br/>Abstract: Using National Instrument’s LabVIEW (Laboratory Virtual Instrument Engineering Workbench), a graphical programming language, we have measured the junction characteristics of different diodes in the temperature range 273-373 K. The PCI-6024E Data Acquisition Board and BNC-2120 for the acquisition of the data have been used. LabVIEW’s Controls and Functions enable one to control the experiment, measure the parameters, analyze and process the data. Ideality factor<i style=""> </i><img src='/image/spc_char/Etta.gif'>, reverse saturation current<i> I</i>₀, and material constant <i style="">B </i>have been evaluated using <i>I</i>-<i>V</i><i style=""> </i>characteristics. The barrier height <img src='/image/spc_char/phi.gif'>_B and the band-gap energy <i style="">E</i>_G, have been measured and compared using both <i>I</i>-<i>V</i><i style=""> </i>and <i>C</i>-<i>V</i><i style=""> </i>characteristics. For Schottky diode, the series resistance <i style="">R</i>_S,<i style=""> </i>and <img src='/image/spc_char/phi.gif'>_B can be calculated using the Norde method. The band-gap energy has been measured using constant current source. Here, we have characterized <i>p</i>-<i>n</i> junction diodes viz. 1N5402, 1N5408, 1N4148, and 6A4. In addition, LabVIEW may be used to characterize other junction diodes like zener diode, LED, varactor diode, Schottky diode, etc. <br/> <br/>Page(s): 517-522 http://nopr.niscair.res.in/handle/123456789/5063 Title: Volumetric and transport properties of binary liquid mixtures of aromatic hydrocarbons with N-methylacetamide at 308.15 K <br/> <br/>Authors: Kumar, B Ranjith; Satyanarayana, B; Banu, S Asra; Jyothi, K Amara; Jyostna, T Savitha; Satyanarayana, N <br/> <br/>Abstract: Experimental data on density, viscosity and speed of sound values at 308.15 K are presented for the binary mixtures of N-methylacetamide with benzene, toluene, mesitylene and phenylacetonitrile. From these experimental data, excess molar volumes, deviations in viscosity and isentropic compressibilityofaromatic hydrocarbons with N-methylacetamide have been calculated. The computed values have been fitted to Redlich-Kister polynomial equation using multiparametric non-linear regression analysis to estimate the coefficients and standard errors. The variations in the calculated excess quantities for these mixtures have been studied in terms of molecular interactions between the component liquids and the effects of methyl and cyanomethylene substitution on benzene ring. <br/> <br/>Page(s): 511-516 http://nopr.niscair.res.in/handle/123456789/5062 Title: Application of rigorous infinitesimal deformation approach to martensitic transformation observed in some Fe-Ni-C alloys <br/> <br/>Authors: Dogan, A; Havvatoglu, Y <br/> <br/>Abstract: <smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="metricconverter"> Rigorous infinitesimal deformation approach has been used to predict the phenomenological crystallographic parameters such as amount of lattice invariant shear, magnitude of total shape deformation, orientations of habit planes, etc. associated with martensitic phase transformation <i>fcc</i> to <i>bct</i> observed in the alloy Fe-22Ni-0.8C and Fe-29.37Ni-0.34C. The values obtained for the crystallographic parameters in the present study and those from the infinitesimal deformation (ID) approach and experiments have been compared with one another. </smarttagtype> <br/> <br/>Page(s): 501-505 http://nopr.niscair.res.in/handle/123456789/5061 Title: Current-mode biquad employing single CDTA <br/> <br/>Authors: Biolek, D; Biolkova, V; Kolka, Z <br/> <br/>Abstract: This paper presents a novel current-mode (CM) second-order filter, employing one current-differencing transconductance amplifier (CDTA), two grounded capacitors and one virtually grounded resistor. The filter provides two current outputs of lowpass (LP) and bandpass (BP) types for driving independent loads and one high pass (HP) current output, flowing through one of working capacitors. The results of the PSpice simulation, which utilizes the CDTA model on the level of CMOS transistor structure, are enclosed. <br/> <br/>Page(s): 535-537