Hello everyone, I'm new here. I'm a physics teacher and in a lab we built an active filter based around an Op Amp. I attach a picture of the circuit, I think it is one of the canonical configurations.
The students obtained the bode plots using an osciloscope, I attach two examples from different groups. In all cases, the measured gain values were higher than those obtained by the theoretical transfer function. Does anyone have any idea what could cause this offset? I attach the phase part of the plots as well,which show better agreement.
Thank you all for your time.
Best,
Juan
The students obtained the bode plots using an osciloscope, I attach two examples from different groups. In all cases, the measured gain values were higher than those obtained by the theoretical transfer function. Does anyone have any idea what could cause this offset? I attach the phase part of the plots as well,which show better agreement.
Thank you all for your time.
Best,
Juan
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