Discussion in 'Homework Help' started by AC/DC kid, May 21, 2013.
Is this Low pass, High pass, Band pass, or Bandstop?
None of the above. You have not indicated where is the output of the circuit.
Where is the output terminal? Or load resistance? And what is your guess?
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.
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.
It's a bonus part of a question, so that's also why i believe it to be a trick question as well.
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?
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 ?
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.
What is meaning of that resistor that is scribbled in series with the capacitor?