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The magnitude of the voltage sag is accepted as one of the most important parameters for its characterization, classification, and the detection. Hence, the selection of most suitable method to quantify the magnitude of voltage sag is a basic requirement of the power quality (PQ) monitoring. This paper first discusses the three different existing methods, namely root mean square (RMS), peak, and fundamental...
New configurations for realizing inverse lowpass, inverse bandpass, inverse highpass and inverse bandreject filters using commercially available current feedback op-amps (CFOA) with an accessible z-terminal such as AD844 are presented. The workability of the proposed circuits has been confirmed by experimental results employing AD844 type CFOAs.
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