i need simple circuit (simulated in protus) to generate triangular wave with value above zero volt( not has negative part)

 

All you have to do is a simple internet search. There are many circuits out there that will do what you want. Pick one and enter it in Proteus. We will help if you have problems, but we will not do it for you.
Regards,
Keith

 

https://images.search.yahoo.com/sea...nglewavegenerator_1246552290.jpg&action=close

ak

 

Indeed I reaserched, but all of them don't give me output.. rather using 555 or 741

 

Is this homework?

 

Indeed I reaserched, but all of them don't give me output.. rather using 555 or 741

Yes, that is what a circuit is - electronic components such as a 555 or 741 that produce an output.

You must be asking something different, but it is not clear at all. Please tell us what it is you are trying to achieve with your question.

ak

 

The last time I checked when you integrate a square wave you get a triangular wave.
I believe that hasn't changed.

 

I need simulated circuit and work done in protus.
As in attachment for example, this circuit doesn't give me output..

 

Oscillators often don't start in simulators unless you turn off the initial operating point calculation in the transient analysis (add .uic to the simulation command in Spice).
Not sure how that's done in Prot(e)us.

 

I need simulated circuit and work done in protus.

I generally don't work with simulators. I cannot help you there.

 

I need simulated circuit and work done in protus.

Do you know how to enter a circuit into Proteus?
If you do, then go ahead and do it.
If you do not, and you need a circuit simulated, then it's time for you to start learning how to do it yourself.
As I said above, we will help, but we will not do it for you.
I have a number of electronic projects on the go. Each one requires me to learn something new to get the results I need. If I ask someone else to do them for me, they are no longer my projects.
Regards,
Keith

 

My suggestion:

Start calling that application correctly, Proteus.

Learn how to implement just a square signal generator.

The op amp has to be polarized correctly. Investigate that part.

Calculate the capacitor and resistor values for 170 Hz. It is a magic frequency that, lately, lot of people seem interested on, not only in this forum.

Show the outcome.