6.6.2. Using Small Signal Equivalent Circuit

Try these first

1. 1.

   What is the typical forward voltage drop for a silicon diode?

   Hint

   Think about the standard values established in electronics.

2. 2.

   What is the on-resistance (ron) in terms of a diode?

   Hint

   Remember, it affects the current flow.

3. 3.

   What is the primary purpose of using a small signal equivalent circuit?

   • To simplify calculations
   • To increase computation time
   • To create complex models

   Hint

   Remember, quicker calculations are beneficial in circuit design.

4. 4.

   True or False: The diode off-condition can be modeled as a high resistance.

   • True
   • False

   Hint

   Think of the diode's function when not conducting.

5. 5.

   You have a diode in a circuit with a 9V supply and a resistor of 1kΩ. Calculate the current through the diode when using the piecewise linear model with Vγ = 0.7 V.

   Hint

   Use the piecewise model for easier calculations.

6. 6.

   Given a small signal variation of ±0.1V around an operating voltage of 5V, what would be the output variation if the diode follows a piecewise linear model?

   Hint

   Consider the slope in your calculations!