What is the purpose of connecting Zener diodes between a MOSFET gate and its source or drain?
The correct answer is D: To protect the gate from static damage. What is the purpose of connecting Zener diodes between a MOSFET gate and its source or drain is to protect the gate from static damage. Zener diodes protect MOSFET gates from ESD. For amateur radio operators, this is important for transistor protection. Understanding this helps when protecting MOSFETs.
Exam Tip
Zener diodes between MOSFET gate and source/drain = protect gate from static damage. Think 'Z'ener 'D'iodes = 'Z'ap 'D'amage protection (ESD). Zener diodes protect MOSFET gates from ESD. Not voltage reference, not substrate protection, not overheating - just static damage protection.
Memory Aid
"Zener diodes between MOSFET gate and source/drain = protect gate from static damage. Think 'Z'ener 'D'iodes = 'E'SD protection. Zener diodes protect MOSFET gates from ESD. Important for transistor protection."
Real-World Application
Connecting Zener diodes between a MOSFET gate and its source or drain: The purpose is to protect the gate from static damage. MOSFET gates are very sensitive to electrostatic discharge (ESD), and Zener diodes clamp the voltage to safe levels. This is the purpose - protect gate from static damage.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Provide voltage reference for reverse-bias gate voltage isn't the purpose - Zener diodes protect from static damage. Voltage reference isn't the purpose.
Option B: Incorrect. Protect substrate from excessive voltages isn't the purpose - Zener diodes protect gate from static damage. Substrate protection isn't the purpose.
Option C: Incorrect. Keep gate voltage within specifications and prevent overheating isn't the purpose - Zener diodes protect from static damage. Overheating prevention isn't the purpose.
题目解析
The correct answer is D: To protect the gate from static damage. What is the purpose of connecting Zener diodes between a MOSFET gate and its source or drain is to protect the gate from static damage. Zener diodes protect MOSFET gates from ESD. For amateur radio operators, this is important for transistor protection. Understanding this helps when protecting MOSFETs.
考试技巧
Zener diodes between MOSFET gate and source/drain = protect gate from static damage. Think 'Z'ener 'D'iodes = 'Z'ap 'D'amage protection (ESD). Zener diodes protect MOSFET gates from ESD. Not voltage reference, not substrate protection, not overheating - just static damage protection.
记忆口诀
Zener diodes between MOSFET gate and source/drain = protect gate from static damage. Think 'Z'ener 'D'iodes = 'E'SD protection. Zener diodes protect MOSFET gates from ESD. Important for transistor protection.
实际应用示例
Connecting Zener diodes between a MOSFET gate and its source or drain: The purpose is to protect the gate from static damage. MOSFET gates are very sensitive to electrostatic discharge (ESD), and Zener diodes clamp the voltage to safe levels. This is the purpose - protect gate from static damage.
错误选项分析
Option A: Incorrect. Provide voltage reference for reverse-bias gate voltage isn't the purpose - Zener diodes protect from static damage. Voltage reference isn't the purpose. Option B: Incorrect. Protect substrate from excessive voltages isn't the purpose - Zener diodes protect gate from static damage. Substrate protection isn't the purpose. Option C: Incorrect. Keep gate voltage within specifications and prevent overheating isn't the purpose - Zener diodes protect from static damage. Overheating prevention isn't the purpose.
知识点
Zener diodes, MOSFET gate, Source or drain, Protect gate from static damage
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.