نتایج جستجو برای: low thd
تعداد نتایج: 1202409 فیلتر نتایج به سال:
با توجه به استفاده بی رویه از سوخت های فسیلی برای تامین انرژی، و کمبود منابع سوخت فسیلی در جهان، بشر رو به استفاده از انرژی های تجدیدپذیر، بخصوص انرژی باد و خورشید آورده است. در کنار استفاده از انرژی های تجدیدپذیر، مصرف کنندگان به دنبال سیستمی با کیفیت و اقتصادی می باشند. در نتیجه دستیابی به سیستمی با کیفیت بالا جهت سرویسدهی مناسب به مشترکین و رسیدن به منافع اقتصادی برای تولیدکنندگان برق و مص...
A class-AB switched current memory cell is proposed. The circuit decomposes the input signal into two components by a low-voltage class-AB current splitter and subsequently processes the individual signals by two low switching error class-A memory cells. As a consequence, the output current obtained by recombination of the separated signals can be higher than the bias current and features low e...
A new low-voltage floating gate MOSFET (FGMOS) based squarer using square law characteristic of the FGMOS is proposed in this paper. The major advantages of the squarer are simplicity, rail-to-rail input dynamic range, low total harmonic distortion, and low power consumption. The proposed circuit is biased without body effect. The circuit is designed and simulated using SPICE in 0.25μm CMOS tec...
To link DC power sources to an AC grid, converters are needed. Inverters the electronic devices, which used for this purpose. Conventional inverters employ harmonic filters and transformers that lossy expensive. Multilevel (MLIs) alternative conventional ones, proposing reduced total distortion (THD), increased range of control, inductor-less design. They generate a stepped waveform, with close...
This paper proposes a low-voltage and low-power fully integrated digitally tuned continuous-time channel selection filter for WiMAX applications. A 5-order elliptic low-pass filter is realized in a Gm-C topology. The bandwidth of the fully differential filter is reconfigurable from 2.5MHz to 20MHz (8x) for different requirements in WiMAX applications. The filter is simulated in a standard 90nm ...
Simulation of High Efficiency Switched Capacitor AC to DC SEPIC Converter for Improved Power Quality
A new topology of single-phase two stage AC to DC SEPIC converter in step down configuration with high efficiency at extremely low voltage gain is proposed with high input power factor and low input current total harmonic distortion. In this work, proposal has be given to modify conventional two stage AC to DC SEPIC converter introducing a switched capacitor branch in between the stages. The in...
This paper proposes a generalized space vector pulse width modulation (SVPWM) technique for hybrid multilevel inverters for minimizing total harmonic distortion (THD). The proposed method easily determines the actual location of the instantaneous reference space vector and the corresponding switching sequence of a multilevel inverter. The proposed algorithm offers a novel method for minimizing ...
Due to their low number of biased components, algorithmic A/D converters are often used in low power implementations. This paper describes an algorithm developed at the Institute of Microtechnology (IMT) which allows extending performances of cyclic RSD converters, without greatly impairing its benefits (reduced silicon area, low consumption). To achieve a Total Harmonic Distortion + Noise (THD...
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