PC oscillope circuit

Discussion in 'General Electronics Chat' started by palermo, Jan 16, 2013.

  1. palermo

    Thread Starter New Member

    Jan 13, 2013
    1
    0
    Hi guys, this is my first post on this forum.
    My name is matt and I have just finished the aac books. I was going to build a circuit to use the pc sound card as an oscillope.

    I have a 10k pot and a 100k pot lying around (plus many op-amps). The circuit in the experiments book uses a 10k pot. but a 100k pot would obviously have a greater impedence which would be great for measurements of voltage.

    Is the input impedance of a typical sound card too low to use a 100k pot?
    and if it is, would a voltage follower circuit using as op-amp be benificial or an overkill?

    Thankyou
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    Hmm hard to say. Do you have a link to your project
     
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