Recent content by ng

  1. N

    Why should one use convolution ?

    hi mike i am really new to dsp and control systems etc.and there is actually no one who can sit down and explain all this stuff to me.So u see its more of a self study.I am much dependent on the forum and replies from people like you. i shall see if i can get hold the book u mentioned.I am...
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    Why should one use convolution ?

    hi berkeman Thanku for the response.I am actually learning control systems now and came across this DSP stuff in it. As far as i know DSP is way too hifi to begin in this priliminary stage.Is it not?So i tot i wud stick with understanding Control systems then move on to DSP.I have heard its...
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    Why should one use convolution ?

    hello Why shud one use convolution ?Inorder to get the state transition matrix from x'=Ax+Bu x(t)=exp(at)x(0) + integral[exp(a(t-tau)) bu(tau) dtau where tau is the variable of convolution. i have read that convolution is used when integration is reqd,for instance,in capacitors and...
  4. N

    3 phase power

    thanx a lot russ,i really needed this. :smile:
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    3 phase power

    hey dlgoff thanx a lot.i shall look into each link and hopefully find what i am loking for and more. Thanx a loooooot!!!
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    Books Please

    hi es that is a very useful bit of info.I really needed it.Thanx for the same. :smile:
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    3 phase power

    Hi all, 3 phase power is measured using 2 and 3 wattmeter methods.Correct? can someone explain how these 2 work?I cudn get enuf info on it.
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    Books Please

    hi, Can someone suggest some good books in Control Systems engg. which includes all from laplace to bode plots,nyquist etc etc. Thanx for any help.
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    Q is the quality factor of series resonant circuits

    Can someone tell me how to find the Quality factor of a loaded resonant circuit? PLEASEEEEEEEEEEthanks a lot.
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    Q is the quality factor of series resonant circuits

    i am sorry to be a dumbo but i wish u spelled it out. :redface:
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    Q is the quality factor of series resonant circuits

    Hi all I read that Q,the quality factor of series resonant circuits is wL/R ------------>1/R sqrt(L/C).This i understand 1.but for parallel resonant it is R/wL....hmm but why is that?this i don quite get. 2.Then what do u mean by loaded resonant circuit and unloaded resonant circuit...
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    Parallel RL circuit

    okay sgt,now i get it. thanx a loooooooooooooot!
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    Parallel RL circuit

    but then sgt,i also read that ip shud be assumed as acos(wt+phi) + bsin(wt+phi) not Kcos(wt+phi) as the supply is Vcos(wt+phi).they need not be in phase... i am confused now.
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    Parallel RL circuit

    SGT,Thankyou very much indeed. I think i got the stuff in my head atlast. Thankyou. :smile:
  15. N

    Parallel RL circuit

    how u get the steady state and coomplementary solution. i understood quite a few things from ur replies but not how to reach the final equations.i am going wrong whenever i try it. so cud u please help out?thanku again
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