# Whats this effect on this set of opamps?

I was trying this circuit

I have calculated the transfer function as
$H(S)=\frac{R_{2}R_{3}R_{5}}{R_{1}(R_{2}R_{4}-R_{3}R_{5})}$
Then I applyed a sin signal at 100 Hz, showed here

this does not make sense with the transfer function since applying the values of the components gives a gain of -10 and in the practice this gives a gain of -100.
But the reason of this question is when I raise the frecuency to 4800 Hz the cropped top of the output signal appears complete!
Why? I understand that with the 100 Hz signal thats the physical limit of the 741 in this mode with the components showed, the $R_{5}$ control the gain, but I do not figure out this effect.

the green signal is the input and the blue is the output.

• "due to the frequency compensation, the 741's voltage gain falls rapidly with increasing signal frequency. Typically down to 1000 at 1kHz, 100 at 10kHz, and unity at about 1MHz." and that's why we don't use 741 op amps. Aug 31, 2017 at 17:35