Can someone tell me what's going wrong????

[kgavionics]

hi
i'm trying to do a lab at home about op amp integrator and i have a weird problem

normally, i'm supposed to have a triangle wave in the output, i don't understand why i have a problem for  positive output slope.

can some one help me please

[IanB]

What happens if you make the period of the square wave shorter?

[kgavionics]

What happens if you make the period of the square wave shorter?

thank you for reply
nothing happens, but if i increase the input signal to the maximum of my generator (10 Vpp) i get most likely a triangle wave.

this problem is getting me crazy, i'm  giving up and i'm going to sleep...

[IanB]

Don't you need a resistor in parallel with the integrating capacitor to keep the output triangle wave centered around zero and stop it drifting? Remember that any tiny DC offset in your input square wave will be integrated to the limit unless this is compensated.

[kgavionics]

Don't you need a resistor in parallel with the integrating capacitor to keep the output triangle wave centered around zero and stop it drifting? Remember that any tiny DC offset in your input square wave will be integrated to the limit unless this is compensated.

Thank you  so much Ianb, the trick is working fine
here's the proof

[nitro2k01]

Out of curiosity, what are your power rails for the op amp?

[kgavionics]

Out of curiosity, what are your power rails for the op amp?

+- 12 V

[jabramo]

There's a video talking about exactly this made by the Signal Path

Here's the first part out of 3