Yes, but that's not what it's in the positive half-cycle... In the positive half-cycle we can see 5.2V which is + 0.6V than what it should be!

Looking at the image in your post #78 it appears that the Y axis is set for 5V/division on the CRO graticule.?

Measuring between the clipped positive and negative levels I read ~ 11V, which is close enough to 6.3V + 4.6V = ~ 10.9V which I posted in post #79

So what exactly what are you saying , ??
In the positive half-cycle we can see 5.2V which is + 0.6V than what it should be

If you are using actual zeners and diodes in a circuit and you are now using a ~20Vpeak to peak sinewave, compared to a 8.48Vpk waveform in simulation, I would expect to get a different result!!

 

Well, nevermind... This report is done and sent to teacher.

I have another one to start! I'll start a new thread!