9.4.2.2. Trans-conductance and Conductance Models

Try these first

1. 1.

   What does the parameter β represent in a BJT?

   Hint

   Think about how much larger the collector current is compared to the base current.

2. 2.

   What is the main function of trans-conductance (g_m)?

   Hint

   Consider it as a ratio that impacts amplification.

3. 3.

   What does the term 'trans-conductance' refer to?

   • The ratio of output voltage to input current
   • The ratio of input voltage to output current
   • The ratio of output current to input voltage

   Hint

   Think about how changes in voltage affect current outputs.

4. 4.

   True or False: PNP transistors use electrons as majority carriers.

   • True
   • False

   Hint

   Recall the charge carriers associated with both types of transistors.

5. 5.

   Given a BJT with β = 150 and a base current of 5 µA, calculate the collector current.

   Hint

   Apply the formula that relates current gain to collector current.

6. 6.

   How would the I-V characteristics of a given BJT change if the temperature is significantly increased?

   Hint

   Consider how temperature affects the behavior of charge carriers in the semiconductor.