Does a modeled diode stay in forward conduction or switch states?

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RaymondDrok
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Homework Statement


bquestion.png


Homework Equations


Model diode in reverse direction as an open, model diode in forward direction as a short.

The Attempt at a Solution



bans.png


In part e of the question, does the circuit stay in state 1 after it gets into state one or does it change states?
 

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upload_2015-2-9_10-52-42.png

This is a simulation of the specified circuit, using real diodes. Red is Vout, green is Vx.
Now let's turn D2 around and see what happens:
upload_2015-2-9_10-57-8.png
 

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