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Designing a notch filter using orcad 15.3

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Design of a notch filter implemented on Orcad pspice 15.3

snapshots and circuit diagram.. are there in the pdf..

u may use it for analog & vlsi projects

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Designing a notch filter using orcad 15.3

  1. 1. Topic: To design aNotch filter having central frequency 3.1206 KHz Submitted by:- Sushil Kumar Mishra ECE-I 05311502809 1
  2. 2. Introduction:In signal processing, a band-stop filter or band-rejection filter isa filter that passes most frequencies unaltered, but attenuates those ina specific range to very low levels. It is the opposite of a band-pass fil-ter. A notch filter is a band-stop filter with a narrow stopband (high Qfactor).Narrow notch filters (optical) are used in Raman spectroscopy, livesound reproduction (public address systems, or PA systems) andin instrument amplifiers (especially amplifiers or preamplifiers for acous-tic instruments such as acoustic guitar, mandolin, bass instrument am-plifier, etc.) to reduce or prevent audio feedback, while having little no-ticeable effect on the rest of the frequency spectrum(electronic or software filters). Other names include band limit filter, T-notch filter, band-elimination filter, and band-reject filter.Typically, the width of the stopband is 1 to 2 decades (that is, the high-est frequency attenuated is 10 to 100 times the lowest frequency atten-uated). However, in the audioband, a notch filter has high and low fre-quencies that may be only semitones apart. Fig.1 A generic ideal band-stop filter, showing both positive and nega- tive angular frequencies 2
  3. 3. Circuit diagram snapshots: 3
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  6. 6. Simulation output:Result : Notch filter having central frequency 3.1206 KHz hasbeen made on orcad and simulated. Trace has been taken. 6

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