7.2. Overall Plan

Try these first

1. 1.

   What are the three regions of a BJT?

   Hint

   Think of the acronym 'EBC'.

2. 2.

   What common application do BJTs serve?

   Hint

   Consider their role in controlling currents.

3. 3.

   What is the function of the emitter in a BJT?

   • To inject carriers
   • To collect carriers
   • To recombine carriers

   Hint

   Remember the primary role of the emitter in BJT configuration.

4. 4.

   True or False: In a BJT, the base-collector junction is forward biased for normal operation.

   • True
   • False

   Hint

   Consider the biasing conditions outlined earlier.

5. 5.

   Consider a silicon BJT where the base-emitter voltage is 0.7V. Calculate the increase in collector current if the saturation current is I0 = 10^-12 A.

   Hint

   Consider the value of Vt when applying the diode equation.

6. 6.

   How does the base width modulation affect the collector current in a BJT? Provide a detailed explanation.

   Hint

   Think about how the current flow changes with varying dimensions of the base structure.