hello,
i found two circuits for function generator with xr2206.
one uses +Vcc, 0V &
the other uses +Vcc 0V -Vcc.
what will be the difference in the output waveforms?
Is there any difference in the symmetry?

 

I need three triangular waves.each having same p-p values.let it be
3Vp-p.
one triangular wave: 0V (min) 3V(max)
second tringlar : -3V(min) 0V(max)
third tringlar : -1.5V(min) +1.5V(max)

I can use three XR2206 ICs.
Can i get these outputs with single power supply?

 

Do you really need three separate triangular waves?

If they have to be of different frequency then you need three generators. However if they need to be of the same frequency (and phase) there is much to be said of using a single generator and creating the different waves you need with a generator and three level shifters. They will then be of exactly the same frequency and in phase, something difficult to achieve with separate generators.

Google 'level shifter' there are lots of examples.

There are also easier (cheaper) ways to generate triangles than an XR2206.

 

i need three different signals with different frequencies

 

Hello everyone.
As a part of my project i need two sinusoidal signals with same frequency and same phase angles. but the offset values should be different. the same xr2206 iam using.

from the previous post, i came to know that a level shifter / clamper can do this job.

I surfed over the net. i didnt find satisfactory circuits. can anybody forward me a link of simple level shifter / clamper?

 

hello.
its urgent. How can i vary the DC offset of the output of xr2206?

 

Use a precision differential amplifier.
http://www.edn.com/contents/images/408387.pdf
See page 3.

 

I bought the xr2206 in kit form to learn more about electronics. (I recently found a free o-scope on craigslist) I wanted a function generator to learn more about basic transistor amplifiers, passive components etc. But it biases everything I've tried to hook it to LM741, push-pull, etc. Could this be powered by a dual supply to offset the 4.5vdc dc offset created (im guessing here) by the voltage divider setup?

Robert

http://www.techedu.com/pdf/elenco/fg-500k.pdf (see page 16 for schematic)

 

The project is missing an output coupling capacitor so its output has DC on it.
An output coupling capacitor will pass the AC signal but will block the DC.

 

Thanks... I actually figured that out. Thats by far the simplest way to eliminate that DC offset. I really appreciate the help thank you so much.

Robert