amplifier for Rogowski Coil

Discussion in 'The Projects Forum' started by abadi, Mar 23, 2010.

  1. abadi

    Thread Starter New Member

    Nov 8, 2009
    hi guys

    im almost done with my project , but im facing 1 problem with my amplifier that amplify the output of the coil,

    this is the experiment i have done .
    first , i set the function generator to max amplitude which gives 23V Ac at the oscilloscope and start with 30k f and its sin-wave .

    and this is my steps;-

    1- i use the function generator to produce a frequency that pass through the coil
    2- i measure the output of the coil by using an oscilloscope to see the wave form then see the V-peack value
    3- i start it with 30K f, and its give me 22mV AC from the coil.
    4- i increase it to 60K f , and its gave me 38mV AC from the coil.
    5- increase it to 90k f , and its gave me 52mV AC from the coil.
    and its going on
    when i increase the frequency the wave will increase and also the V-peak value ...

    my question are
    1- how much gain i have to use to amplify the signal ..??
    2- my gain should be dependent base on what ?

    thanx alot
  2. abadi

    Thread Starter New Member

    Nov 8, 2009
    neeeeed hellllp :(
  3. Bychon


    Mar 12, 2010
    Your gain should be dependent on how much voltage you want to have after the amplifier has amplified.