Browsing by Author "Tiwari, Satyendra Nath"

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Frequency response and power dissipation of RC coupled CE amplifier by using series and parallel network of like transistors
    (Wiley Online Library, 2023) Tiwari, Satyendra Nath; Khadarabad, Ghouse Mohiuddin; Pandey, Anoop Kumar; Dwivedi, Apoorva; Pandey, Shri Prakash; Singh, Vijay
    The RC-coupled small-signal amplifier is a widely used circuit that serves as a basic building block in electronic circuits. The study of amplifier circuits with various component modifications may yield important results that can be utilized to improve circuit designs based on application needs. Using the Pspice 9.5.2 simulation tool, a study of a BJT-based CE amplifier is carried out to determine the dependence of frequency response, bandwidth, maximum voltage gain, power dissipation, input impedance, and other parameters while using a network of BJTs coupled in parallel and in series from Q1 to Qn.
  • Thumbnail Image
    Item
    Quantum chemical study of effect on adsorption properties of antituberculosis drug N-Cyclopentylidenepyridine-4-carbohydrazide interaction with CNT(C56H16)
    (Elsevier, 2023) Pandey, Anoop Kumar; Dwivedi, Apoorva; Mishra, Avinash Kumar; Tiwari, Satyendra Nath; Singh, Vijay; Vuai, Said A. H.
    Tuberculosis is the most common disease that affects the lungs in humans. The electronic structural and chemical properties of the antituberculosis drug N-Cyclopentylidenepyridine-4-carbohydrazide have already been investigated. The adsorption properties of the antituberculosis drug N-Cyclopentylidenepyridine-4-carbohydrazide (CPPC) with single-wall carbon nanotube CNT(C56H16) are investigated using a combination of DFT/B3LYP method and 6-31G(d,p) basis set in both gaseous and water solvent, and calculated results are compared. By comparing CNT's corresponding optimized bond lengths with CNT@CPPC, the effect of CPPC adsorption on optimized drug delivery system parameters has been discussed. Based on topological parameters, the nonbonding interaction between CNT and CPPC drug is discussed using QTAIM analysis at BCP in both gas and water solvent. The thermodynamical stability of the CPPC@CNT adsorption process is also calculated, showing the adsorption of CPPC with CNT favors in both media. Natural bond analysis (NBO) was used to investigate the IR spectra, and the effect of charge transfer from CPPC to CNT in CNT@CPPC in both media provides information about how polarity changes from gas to water solvent. Because drug delivery action is done in blood plasma, the UV–Vis spectra of CNT are compared to CNT@CPPC in water solvent, providing insight into the adsorption of CPPC drug by CNT. We have compared the chemical shift isotropic (CS1) and chemical shift anisotropic (CSA) of CNT, CPPC, and CNT@CPPC to determine the change in electron density.
  • Thumbnail Image
    Item
    Simulation study to enhance the efficiency of switching devices using the combinations of diodes in various networks
    (Wiley Online Library, 2023) Tiwari, Satyendra Nath; Khadarabad, Ghouse Mohiuddin; Pandey, Shri Prakash; Pandey, Anoop Kumar; Singh, Vijay
    In this communication, PSpice simulation software is used to design and characterize reverse biasing modes in series and parallel combinations. Using multiple diodes of similar types, how the breakdown voltage and power dissipation vary in parallel and series modes in reverse bias is investigated. In this paper, correlation equations and correlation factors between voltage and current in both series and parallel combinations using n = 1-5 diodes in reverse bias are also found. The second-order correlation equation between voltage and current provides a new way for designing new networks of PN junction diodes for better power gain. The mathematical formulation for applied voltage and average current of n = 1-10 diodes in parallel and series combinations is also calculated, which can help researchers to design new network circuits for switching devices in the electronics industry.