Diode Modeling Pt 1: Open & Short Circuits

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    Diode Modelling
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SUMMARY

The discussion focuses on diode modeling, specifically how to represent diodes in circuit simulations. Diodes are modeled as open circuits in reverse bias and short circuits in forward bias. The conversation also touches on the behavior of the circuit when a diode (D2) is reversed, prompting questions about state changes in the simulation. The simulation uses real diodes, with outputs represented in red (Vout) and green (Vx).

PREREQUISITES
  • Understanding of diode characteristics and behavior
  • Familiarity with circuit simulation tools
  • Knowledge of voltage output representation in simulations
  • Basic concepts of forward and reverse bias in diodes
NEXT STEPS
  • Explore advanced diode modeling techniques in SPICE simulations
  • Learn about the effects of diode reverse recovery time on circuit performance
  • Investigate the impact of temperature on diode behavior in simulations
  • Study the principles of transient analysis in circuit simulations
USEFUL FOR

Electrical engineers, circuit designers, and students studying semiconductor devices who are interested in diode behavior in circuit simulations.

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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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