1.2. V-I Characteristics

Try these first

1. 1.

   What happens to the current when a P-N junction diode is forward biased?

   Hint

   Think about how voltage affects current flow.

2. 2.

   Is there current flow in reverse bias?

   Hint

   Consider what conditions allow current to flow through the diode.

3. 3.

   What is the threshold voltage for a silicon diode?

   • 0.3V
   • 0.7V
   • 1.2V

   Hint

   Remember the typical value for silicon.

4. 4.

   In reverse bias, does a P-N junction diode allow large current to flow?

   • True
   • False

   Hint

   Think about how diodes function when the voltage is applied in reverse.

5. 5.

   Explain how the current in a forward-biased diode can be modeled using the Shockley diode equation. Provide a simplified version for practical use.

   Hint

   Think of the relationship between voltage and current as exponential growth.

6. 6.

   A silicon diode with a reverse breakdown voltage of 25V is subjected to a reverse bias of 20V. Analyze the expected behavior of the diode and illustrate how you would protect it in a circuit.

   Hint

   Consider protective measures common in circuit designs.