9.4.1. I-V Characteristic Curves

Try these first

1. 1.

   What does the I-V characteristic curve represent in a BJT?

   Hint

   Think about what happens when you change the voltage.

2. 2.

   What does the parameter β stand for?

   Hint

   This is a measure of amplification in the device.

3. 3.

   What is the primary carrier type in an n-p-n transistor?

   • Electrons
   • Holes
   • Protons

   Hint

   Think about the type of charge carriers used in this BJT style.

4. 4.

   True or False: The current gain (β) of a transistor is the ratio of the collector current to the base current.

   • True
   • False

   Hint

   Recall the definition of current gain.

5. 5.

   If a BJT has β = 150 and a base current of 10 µA, calculate the collector current.

   Hint

   Use the current gain formula to find the answer.

6. 6.

   Design a circuit that applies 0.7V across the base-emitter junction of a p-n-p transistor, ensuring that at least 1 mA flows through the collector. What resistances would you choose?

   Hint

   Remember to keep track of the voltage across each resistor and the transistor's properties.