Căutare după Autor "52303efd-9f1d-4c81-a2d9-3669547a5035"

Afișează articolele 1-7 of 7

    • About Signals' Spectrum 

      Grigorescu, Luiza; Oproescu, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2010)
      Due to this Fourier series exclusive interpretation applied to periodical signals, which shows that a stationary harmonic signal with a single pulsation  cannot contain components of other pulsations but its own pulsation ...

    • Precision Rectifier 

      Grigorescu, Luiza (Universitatea "Dunărea de Jos" din Galaţi, 2003)
      Electric phenomena dependence of non electric one rises a lat of issues in design and running of electric and electronic equipments. So, this is basic problem of one of most dynamic field of measurements technique, represented ...

    • The Emfi Material and their Use 

      Grigorescu, Luiza; Diaconescu, Ioana (Universitatea "Dunărea de jos" din Galați, 2010)
      ElectroMechanical Film (EMFi) is a thin, plastic material that can be utilized as a sensor and actuator. EMFi is quite new material in the field of ultrasonics and has favorable properties like good matching to air ...

    • The Mechanical Low Frequency Signal Reconstruction by it's Spectral Components 

      Grigorescu, Luiza (Universitatea "Dunărea de Jos" din Galați, 2007)
      This paper is a point of view of a new way of signal reconstruction through it’s spectral components. Sampling theory is analyzed from different perspectives, what means if for technical reasons the time can’t be sampled ...

    • Thermoelectric Generator - An Alternative Electric Power Source 

      Diaconescu, Ioana; Grigorescu, Luiza (Universitatea "Dunarea de Jos" din Galați, 2012)
      This paper presents the thermoelectric generators which converting directly heat flow into electric energy. Thermoelectric modules (TEM) normally designed for cooling are suited for power generation as well, as they are ...

    • Transducer with Phase Modulation and Adjustable Sensitivity 

      Grigorescu, Luiza; Diaconescu, Ioana (Universitatea "Dunărea de Jos" din Galați, 2011)
      The work presents an easy converter in order to be used at little displacement. The circuit gives two electrical signals with the same frequency and with different phases, dependent on the displacement.Both signals go ...

    • Vibration Measurement Equipment 

      Grigorescu, Luiza (Universitatea "Dunărea de Jos" din Galați, 2006)
      This paper describes the principles of operation of typical instrumentation used in the measurement of shock and vibration. It deals with the measurement of parameters which characterize the total (broad-band) signal.