i have a project for school,i have to make a project in lt spice and on pcb with a Oscillator triangle generator.Can u help me with the simluation and with the electronic schematic please?
I found this http://www.circuitstoday.com/triangular-wave-generator but i have to make the operational amplifier from components...

 

Welcome to AAC!

If this is project for which you will receive a grade, you must show your work. Members won't be giving you answers; we can only try to guide you to a solution.

 

Here are many different circuits for triangle wave generators.
I suggest you pick one that uses discrete parts if you can't use IC's.

 

sure,i worked and made this...but still something is now right.you can open it in Tina for simulation

 

OR THIS http://www.falstad.com/circuit/e-triangle.html

 

Why did you select a circuit with op amps, when you stated you needed to build the op amp from components?
Building an op amp from components is not a trivial task.

 

Why did you select a circuit with op amps, when you stated you needed to build the op amp from components?
Building an op amp from components is not a trivial task.

i wanted to see if the circuit is working first

 

i wanted to see if the circuit is working first

It makes no sense to waste you time on a circuit that you won't build.

 

It makes no sense to waste you time on a circuit that you won't build.

man,is my first time when i do this.i have 3 more weeks to do it.So instead of the second op amp i tried to build one from components,i will do the same with the first one.But when i try to simulate i have an issue,the outpus signal is still rectangular instead of triangle

 

I can't open your .tsc file.
Can you post a screenshot of your schematic and the results?

I use LTspice.

 

As you are supposed to be simulating the circuit with LTspice, you can post your .asc, .sub and .asy files here. No need for .rar (which many people won't open).

 

i added 3 photos,up and down are the sources with +15 and -15

 

Please don't use .rar to post your files.
Just post them directly.

 

Hello,

As said, you can just post the pictures right to the forum.
For now I unpacked the rar file and will post the pictures:









Bertus

 

Alec_t. Not everyone mandates using LTSpice.

There are numerous free and paid simulators.

 

Not everyone mandates using LTSpice.

Of course not.
But the TS stated:

i have a project for school,i have to make a project in lt spice

 

Hello,

Then why is he using Tina, when lt spice must be used?
@gxg513 , you can download LTSpice here:
http://www.linear.com/designtools/software/

Bertus

 

Alec_t. Not everyone mandates using LTSpice.

True, but in post #1 the TS states "i have to make a project in lt spice".

 

@bertus

Excellent point. Only the TS knows why he chose to writ LT Spice.

 

look,the scheme does not work,is not important whitch program i use.I just need some advices.The scheme is correct but when i build the operational amplifier and put it in the circuits,the output signal is not triangle anymore