magnetic head signal

Discussion in 'General Electronics Chat' started by cosmin800, Aug 29, 2005.

  1. cosmin800

    Thread Starter New Member

    Aug 29, 2005
    1
    0
    I am tring to work with an ADC and i have one problem, the adc cannot see the negative alternance of the signal from the head, how can i shift the signal so all the wave from the head to be on the positive edge?
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Hi cosmin800,

    I think what you are going to need is a differential amplifier that is powered from your positive supply. That way your read-head will be connected up as a floating signal source.

    Can you post your present read-head interface circuit here?

    hgmjr
     
  3. Gorgon

    Senior Member

    Aug 14, 2005
    113
    0
    You could be lucky if the ADC in question can take a negative -ref input, but the best is for you to post the schematic here.

    TOK ;)
     
  4. nomurphy

    AAC Fanatic!

    Aug 8, 2005
    567
    12
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