Yes i set it to 100k again, because i have a hard time to get 10 Volt out of the XR2206 output in the end, but i will do what you say and compare )
Edit: Much better ! Tops are smoother, but that stepping is still there. What causes it and how can i improve it?
**broken link removed**
Would i need a different op-amp than the TS912?
EDIT2: If i leave the inductor out and just have the 10 Ohm resistor as a load after the transistors, then the waveform looks more like the intended waveform:
**broken link removed**
EDIT3: My learning curve concerning this is not as steep as it should be, i apologize.
I have come to the conclusion that the deformed waveform is a consequence of a magnetic problem probably related to saturation of the core.
When i put a microwave oven fan coil in place for my toroidal inductor then i get a wonderful sinusoid waveform. As has been already pointed out, the low number of turns (100) on my inductor in comparison to the many thousands (0.775 H) of the oven fan coil might not be enough.
If someone knows exactly what is going on here, i would very much like to hear an explanation, so i can
understand the phenomenon better. Thank you.