I figured out my circuit in PSpice, but i faced with problem. It work with 1Khz, but i need 10 Khz and i can't to adjust it because i'm loosing signal. Who knows how to adjust it?
When i reduce C2 or R4 more i have the last one picture
One problem is that you are using 741s. Look up the Gain vs frequency of that old, obsolete, crappy opamp.
Another problem is that you are using only +-5V supplies (were it just barely begins to work), and a 741 is not even close to being rail-to-rail output, which you need for the peaks of the triangle wave to reach close to the + and - voltage rails.
One problem is that you are using 741s. Look up the Gain vs frequency of that old, obsolete, crappy opamp.
Another problem is that you are using only +-5V supplies (were it just barely begins to work), and a 741 is not even close to being rail-to-rail output, which you need for the peaks of the triangle wave to reach close to the + and - voltage rails.
This one is rail-to-rail, is fast enough, and runs on 5V. I'm showing how to run it on a single 5V supply. Note the rise and fall times on V(y). Note the frequency it is running at.