Help - RMS Value

Discussion in 'Homework Help' started by ashkash, Feb 25, 2007.

  1. ashkash

    Thread Starter New Member

    Feb 25, 2007
    Determine the rms value of the voltage that is measured as a function of frequency at f = 3.22MHz. e(t) = 50sqrt(2)cos(wt). A 100MHz oscilliscope is being used to measure the voltage across nodes AA' as seen in the figure. The input impedence of the oscilliscope is a 1Mohm resistor in parallel with a 13pF capacitor. Also, calculate the rms voltage value that would be measured with an ideal oscilliscope (one with an infinite input imedence).

    I do not know where to start with this problem. I need to calculate the rms voltage measured with an ideal oscilliscope and an oscilliscope with the specified characteristics above. I have attached the circuit image. Any help would be appreciated. thanks.
  2. hgmjr

    Retired Moderator

    Jan 28, 2005
    Take a look at this tutorial on AC signal measurement and see if it helps you with your homework.