Good morning...
I was wondering if I can apply the above transformation on this op-amp based circuit, with a T resistor junction turned into a pi resistor network. I have the equations to do so since all three resistances are known, but is it okay to do that? My plan is to then use the value Rf or Rc in the red transformation to find the output voltage in:
Vo = Vout = -Rf/Rs *Vin
R1 = 60k ohm, R2 = 30k ohm, R3 = 40k ohm
Rc = (R1 R2 + R2 R3 + R1 R3)/R3 = (60k*30k + 30k*40k + 60k*40k)/40k = 135k ohm
Rf = Rc = 135k ohm
Vo = -135k ohm/8k ohm *0.240V = -4.05V
This makes sense since -15V < -4.05V < 15V, but is it acceptable to use the transformation?
Thanks for your time folks.