Poslední příspěvky

  • Kvasiresonant DC-DC Converter with Switching at Zero Current - Part 1 

    Vorel, P. (Společnost pro radioelektronické inženýrství, 1998-04)
    A kvasiresonant DC - DC converter and its control circuits are proposed. The relations useful for design of the converter will be deduced in the part 2. The fundamental idea of the converter is the switching -on and -off ...
  • DSP Implementation of Image Compression by Multiresolutional Analysis 

    Kucera, R.; Vlcek, J.; Vlcek, K. (Společnost pro radioelektronické inženýrství, 1998-04)
    Wavelet algorithms allow considerably higher compression rates compared to Fourier transform based methods. The most important field of applications of wavelet transforms is that the image is captured in few wavelet ...
  • Standards of Distorted Signal for Calibration of Total Harmonic Distortion Meters 

    Horsky, P. (Společnost pro radioelektronické inženýrství, 1998-04)
    In this article a survey and evaluation of some progressive approaches to the standards of non-linear distortion is reported. Some types of standards of signals with the known total harmonic distortion used for calibration ...
  • Some Applied Aspects of Rational Higher-Order s-z Transformations 

    Georgiev, V. (Společnost pro radioelektronické inženýrství, 1998-04)
    Some contributions of higher-order s-z transforms are exposed related with the conversion of a continuous-time transfer function into its discrete-time counterpart. The developed algorithm of sensitivity analysis with ...
  • High Frequency State-Variable Biquadratic Active Filters 

    Dostal, T. (Společnost pro radioelektronické inženýrství, 1998-04)
    The state-variable (KHN) active RC biquadratic filters with good performance in high frequency range , flexibility of outputs (LP, HP, BP), low sensitivities in novel current and hybrid modes, using current conveyors, ...