equalizer / pspice simulation

[abbey]

i am trying to study the frequency response of the parametric equalizer that is attached.I tried to do the simulation using pspice but i don't know if there is something wrong with my project . (that is also attached).Can anyone help me?

 

[keith1200rs]

i am trying to study the frequency response of the parametric equalizer that is attached.I tried to do the simulation using pspice but i don't know if there is something wrong with my project . (that is also attached).Can anyone help me?

What is actually wrong with the simulation?

Keith.

 

[erikl]

... (that is also attached).Can anyone help me?

• extraction of only 100ppm from the total voltage will not show a considerable effect - but may be this is intended for the first trial only
• the 2 series resistors between R28 and GND, as well as R35 seem to be 1Ω instead of 1MΩ
• There seems to exist a short-circuit between the inputs of the bottom right LM741

 

[keith1200rs]

The 1ohm resistors make sense to me, but the short on the 741 inputs could be a problem.

Keith