Diode Limiter(I think thats the right translation)

[Bassalisk]

1. The problem statement, all variables and given/known data
http://pokit.etf.ba/get/1fd25435e20bb109d3ac040e6e439bf9.jpg

Uul=Uinput
Uizl=Uoutput


Find output characteristic if D1 is burnt out(but acts as closed switch) and D2 is flipped over(points the other way)
R1=R2=2k Ohms
R0=1k Ohms
Input voltage: V(wt)=20sin(wt)
E1=3V
E2=5V
2. Relevant equations



3. The attempt at a solution

Now i found out that, -20<= Ui <-5 Volts output voltage will be calculated by the formula Uo=(2Ui-5)/3

But, i think i got it wrong on the second interval, -5 and further.

I got it that Uo=Ui

Now my question here is, will these 3 V take over, and give potential until input voltage reaches 3V and then acts sinusoid to the max and then drops to 3 V again and so on?


Thanks