circuit help

Discussion in 'Homework Help' started by AC/DC kid, May 21, 2013.

  1. AC/DC kid

    Thread Starter New Member

    May 21, 2013
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    [​IMG]


    Is this Low pass, High pass, Band pass, or Bandstop?
     
  2. MrChips

    Moderator

    Oct 2, 2009
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    None of the above. You have not indicated where is the output of the circuit.
     
  3. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    Where is the output terminal? Or load resistance? And what is your guess?
     
  4. AC/DC kid

    Thread Starter New Member

    May 21, 2013
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    I was thinking it was a Parallel resonant band-pass filter, but thats where i got confused seeing as it doesnt have an output. guess it is a trick question.
     
  5. Veracohr

    Well-Known Member

    Jan 3, 2011
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    If it's a homework question I suggest you not dismiss it as a trick question. I've missed points due to NOT making assumptions.
     
  6. AC/DC kid

    Thread Starter New Member

    May 21, 2013
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    It's a bonus part of a question, so that's also why i believe it to be a trick question as well.
     
  7. AC/DC kid

    Thread Starter New Member

    May 21, 2013
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    Actually now i see i was wrong in saying it's a resonant band-pass filter. there is a low pass RC and a low pass RL filter in this circuit. so if we assume that R5 is the load then wouldn't it be a Band pass filter?
     
  8. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    Low pass filter + low pass filter = Band pass filter ? No, for sure.

    First assume for "low frequancy" that C1 is a open circuit and L1 is a short circuit"
    Next for "high frequancy" C1 is a short circuit and L1 is a open circuit.
    So what type of a filter we have if R5 = LOAD resistance ?
     
  9. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    The first part (left hand) is resistors so it can be solved as a simple divider. To the right, you basically have a cap in parallel with an inductor. You should be able to figure what that does as frequency increases.

    This looks similar to a crossover network for a speaker.
     
  10. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    What is meaning of that resistor that is scribbled in series with the capacitor?
     
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