7.2. Correction of Current Formula

Try these first

1. 1.

   What is a BJT?

   Hint

   Think about the types of charge carriers.

2. 2.

   Define collector current.

   Hint

   Reflect on where the current is coming from.

3. 3.

   What happens when two junctions in a BJT are too far apart?

   • It functions well.
   • It behaves like two separate diodes.
   • It increases the collector current.

   Hint

   Consider the distance between junctions.

4. 4.

   True or False: A strong reverse bias increases the availability of electrons in the base region.

   • True
   • False

   Hint

   Recall how bias influences carrier availability.

5. 5.

   Calculate the collector current in a BJT with a given reverse bias of -5V, emitter current of 10mA, using the corrected current equations.

   Hint

   Ensure you account for the reversal of bias in your calculation.

6. 6.

   Explain the step-by-step effects of changing bias conditions from forward to reverse, specifically listing how current profiles alter.

   Hint

   Break down the phases of bias change.