Electrical properties of the human finger

Discussion in 'General Electronics Chat' started by kdillinger, Dec 28, 2009.

  1. kdillinger

    Thread Starter Active Member

    Jul 26, 2009
    141
    3
    Does anyone know if there are more up to date models of the resistance and capacitance of the human finger/hand? Maybe it does not need to be "up to date" but are there any newer sources, perhaps?

    I found a paper on AES that discusses a model, but it is rather dated, 1977. I will only post an excerpt since you have to be a paying member or buy the full paper:

     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    Your values will depend on your electrode contact area, and electrode type. Which kind of electrodes are you going to use? If you are going to make some report these data must be included. You should use proper medical electrodes. Also you should not measure resistance and capacitance of the human finger/hand? But admittance (look it up in Wiki). I will recommend using a low frequency AC below 500Hz, but not a multiple of the mains frequency. A lock-in amplifier is perfect for this kind of measurement.
     
    Last edited: Dec 28, 2009
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