Recent content by Law91

ok so in designing simulating and implementing the circuit with Z2 a capacitor between 10pf and 500pf and the rest being resistors between 0.1K and 10K making the circuit look like an inductor of 11.11mH using a +-12V power supply I am having trouble making it look like an inductor of value...

ok so i finally got to proving that Zin = Z1Z3Z5/Z2Z4... another question in determing Vout/Vin for the attached circuit where Z2 = capacitor and Z1,Z3,Z4,Z5 = resistors i got the current i1 = current i2 where i1 = Vin/Z1 and i2=(V1-Vin)/Z2 so from those two equations v1 =...

just a quick clarification, with v1 = Vin(1+Z2/Z3) AND v2 = Vin + (Z4(-V1+Vin))/Z3 should i evaluate v2 by substituting in the value of v1 before i solve vout as a function of vin or should i go on and just solve vout as a function of vin

well using (Z3) V1-Vin.I and (Z4) IZ4=Vin-V2 Because the current through Z3 = Current through Z4 then: (V1-Vin)/Z3 = (Vin-V2)/Z4 V2/Z4 = (-V1+Vin)/Z3 + Vin/Z4 V2 = Z4 x ( (-V1+Vin)/Z3 ) + Z4 x ( Vin/Z4 ) V2 = ( Z4(-V1+Vin))/Z3 +Vin so V2 = Vin + (Z4(-V1+Vin))/Z3 ?

so should v2 = Vin ( -V1/Z3 + V1/Z4) ? im at a loss as to what v2 should be

ok so for v2 i ended up with v2 = Vin ( 1 + Z4/Z3) + V1 and because V1 = Vin ( 1 + Z2/Z1) which then equates to V2 = Vin ( 1 + Z4/Z3) + ( Vin ( 1 + Z2/Z1)) should i leave it in terms of V1 or should i evaluate V1... Then should the final solution just be the combination of V1 and V2...

hi, well for the first op-amp using just vin,Z1 and Z2 i ended up with 1+Z2/Z1 but I am not sure if that's correct... i also tried using this circuit attached... to get Zin = (Z1+Z5) / Z2 but again not sure if that's correct or allowed..

Hi, i have this gyrator circuit that is equivalent to an inductor of 11.11mH and I am required to show that if the opamps are ideal and assuming that the circuit is stable that Zin = (Z1*Z3*Z5) / (Z2*Z4) ive got for an ideal opamp that i+ = i- = 0 and that Aol = infinity the ciruit...