ECE214_DModels

What kind of a device is a diode?

• Bilateral

• Linear

• Non-linear

• Unipolar

The constant-voltage model of the diode neglects:

• Reverse breakdown

• Built-in potential

• Reverse saturation current

• Diode current dependency on diode voltage

For small-signal analysis, the diode is represented by:

• A battery

• A resistor

• A battery and a resistor

• A short circuit

The capacitance of a reverse-biased PN junction:

 

• Increases with reverse bias voltage

• Is not voltage-dependent

• Decreases with reverse bias voltage

• Increases with built-in potential

For logic gates made of pn-junction diodes, it is preferred to use:

• The ideal-diode model

• The constant-voltage model  

• The graphical representation

• The exact equations