Interference Lab(Filter)

Discussion in 'Homework Help' started by bham1307, Oct 7, 2008.

  1. bham1307

    Thread Starter New Member

    Oct 2, 2008
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    Design a circuit to filter 100 kHz and pass 2 KHz. The test circuit should contain a 2 KHz oscillator, a 100KHz oscillator, a filter circuit, and a 6 dB amplifier circuit.

    Basically I need to create a low pass or bandpass ciruit to pass the desired frequency and reject the other. I originally went with a bandpass circuit. I am really confused to be honest though, and need some help getting started
     
  2. mik3

    Senior Member

    Feb 4, 2008
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    Do you want to make a passive filter (use inductors, capacitors and resistors) or an active filter (use op-amp, resistors and capacitors)?
     
  3. bham1307

    Thread Starter New Member

    Oct 2, 2008
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    I need to creatve an active filter, using op amps(741 op amp)
     
  4. mik3

    Senior Member

    Feb 4, 2008
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  5. beenthere

    Retired Moderator

    Apr 20, 2004
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    The good news is that the 741 has such a poor response that you won't need much of a filter to eliminate the 100KHz.
     
  6. bham1307

    Thread Starter New Member

    Oct 2, 2008
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    Thanks, this site was very helpful helping me get my correct values. The project is due thursday, so i may be in touch some tomorrow, after talking with my instructor. Thanks again!
     
  7. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    Beenthere, i like your point of view about how to use the 741 as simple low pass filter.
     
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