analog circuit design - BJT amplifier

Discussion in 'Homework Help' started by Noam Dvir, Jun 15, 2015.

  1. Noam Dvir

    Thread Starter New Member

    Jun 15, 2015
    hello, i need to design analog circuit that has a transfer curve as seen in the following image using resistors, capacitors,voltage, and BJT (with beta value of 100).
    the parameters are:
    f1= 21Hz
    f2=21 KHz

    the circuit also need to have input resistance of Rin= 60 kilo-ohm and output resistance of 51 kilo-ohm.

    can anyone help me figure out how this type of circuit should look like?
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    YOU must make an attempt at designing the circuit.

    After YOU do this, post the circuit here and we will help you correct any problems. We will NOT do it for you.
  3. Noam Dvir

    Thread Starter New Member

    Jun 15, 2015
    first of all, let me apologize if i gave the impression that i was trying to get you guys to do my homework for me. i most certainly wasn't (sorry I'm just pretty clueless at this point).

    now for what i do know (or think I know):

    i think the circuit should have 3 stages, each connected with a capacitor, where the first stage is for achieving the required input resistance, the second for the required gain, and the third is for the required output resistance.

    (the first and last stages might also add some gain but it will be considered in the second stage)

    My question is how do I know which of the following modules should I use for each stage?

    Thank you!
  4. WBahn


    Mar 31, 2012
    Where (which stage) are you going to deal with the frequency response specifications?
  5. Veracohr

    Well-Known Member

    Jan 3, 2011
    Pick some resistor values then calculate the gain, Rin and Rout as outlined in your attachment. That should help you figure out which types are appropriate for which sections.

    Are you sure your output resistance is supposed to be 51 kilo-ohms? That's rather high.