Exam-style question
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How does the transfer characteristic of a MOSFET differ from that of a bipolar junction transistor (BJT)?.
- A.MOSFETs have a linear relationship, while BJTs do not
- B.MOSFETs are voltage-controlled, while BJTs are current-controlled
- C.Both have the same transfer characteristics
- D.MOSFETs operate at lower voltages than BJTs
Model answer
What a good answer should say
- MOSFETs are voltage-controlled, while BJTs are current-controlled
Explanation
Why this works
The key difference in transfer characteristics is that MOSFETs are controlled by voltage at the gate, while BJTs are controlled by current at the base. This fundamental distinction affects their operation and applications in circuits, highlighting the versatility of MOSFETs in modern electronics.
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