Resistor and Capacitor value for Low-Pass Filter

Discussion in 'Homework Help' started by DamarJati, May 7, 2018.

  1. DamarJati

    Thread Starter New Member

    May 7, 2018
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    excuse me...
    I want to ask something
    what's the effect of resistor and capacitor value on low-pass filter?
    and how i use that for my amplifier project?
     
  2. dl324

    AAC Fanatic!

    Mar 30, 2015
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    Welcome to AAC!

    An important parameter for a low pass filter is the frequency at which the power has been reduced by half.

    Is this homework?
     
  3. BR-549

    AAC Fanatic!

    Sep 22, 2013
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    The value of resistance and capacitance sets the value of "low"....in "low pass filter". It implies that value and lower.....will pass.
     
  4. DamarJati

    Thread Starter New Member

    May 7, 2018
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    Yeah, literally it's my homework...
    and thankyou for your reply btw
     
  5. DamarJati

    Thread Starter New Member

    May 7, 2018
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    0
    So...
    that's mean if i using lower value of capacitor and resistor, the lower audio frequency that will pass?
     
  6. BR-549

    AAC Fanatic!

    Sep 22, 2013
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    It's not the individual values of R and C. It's the ratio of R and C.

    We can control current in two ways.
    1. The amount of current is controlled by resistance.
    2. We can also control how fast the current changes. Like for a current to go from 0 to 10 amps. That transition can take different speeds or times, to get up to 10 amps. Some signals can go from 0 to 10 amps in 1 second. Other signals can do it in 1 millionth of a second.....a million times faster.

    A filter can select what speeds(rates of change) go thru.....and what speeds are blocked. It's a speed limit on the CHANGE of current.

    Does that make any sense?
     
  7. dl324

    AAC Fanatic!

    Mar 30, 2015
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    AAC policy for homework is that we guide students to an answer so you have a better understanding vs. just giving answers.

    Post your work and tell us what you don't understand.
     
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