23.7. Current to Voltage Relationships

Try these first

1. 1.

   Define a current amplifier.

   Hint

   Think about the definition in simple terms.

2. 2.

   What is biasing in transistor circuits?

   Hint

   Recall its importance in keeping devices active.

3. 3.

   What primarily defines a current amplifier?

   • It amplifies voltage
   • It amplifies current
   • It converts signals

   Hint

   Focus on the type of signal it works with.

4. 4.

   True or False: AC coupling allows DC signals to pass through an amplifier.

   • True
   • False

   Hint

   Think about the purpose of coupling capacitors.

5. 5.

   Design a current amplifier circuit with an input current of 1 mA and a target output current of 20 mA. What must the current gain be?

   Hint

   Use the current gain formula to solve.

6. 6.

   If a current amplifier has a current gain of 10 and experiences loading effects that reduce the output current by 1 mA, what will the effective output current be if the input current is 5 mA?

   Hint

   Consider both current multiplication and any reduction due to loading.