What can be done to prevent unwanted oscillations in an RF power amplifier?
The correct answer is C: Install parasitic suppressors and/or neutralize the stage. What can be done to prevent unwanted oscillations in an RF power amplifier is to install parasitic suppressors and/or neutralize the stage. Parasitic suppressors and neutralization prevent oscillations. For amateur radio operators, this is important for amplifier stability. Understanding this helps when stabilizing amplifiers.
Exam Tip
Prevent oscillations in RF power amplifier = install parasitic suppressors and/or neutralize stage. Think 'P'revent 'O'scillations = 'P'arasitic suppressors/'N'eutralize. Parasitic suppressors and neutralization prevent oscillations. Not minimum loading, not maximum power, not phase inverter - just parasitic suppressors and/or neutralization.
Memory Aid
"Prevent oscillations in RF power amplifier = install parasitic suppressors and/or neutralize stage. Think 'P'revent 'O'scillations = 'P'arasitic/'N'eutralize. Parasitic suppressors and neutralization prevent oscillations. Important for amplifier stability."
Real-World Application
Preventing unwanted oscillations in an RF power amplifier: Install parasitic suppressors and/or neutralize the stage. Parasitic suppressors (like ferrite beads) and neutralization prevent feedback that causes oscillations. This is the solution - parasitic suppressors and/or neutralization.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Tuning for minimum loading isn't the solution - parasitic suppressors and neutralization prevent oscillations. Minimum loading isn't the solution.
Option B: Incorrect. Tuning both input and output for maximum power isn't the solution - parasitic suppressors and neutralization prevent oscillations. Maximum power isn't the solution.
Option D: Incorrect. Using phase inverter in output filter isn't the solution - parasitic suppressors and neutralization prevent oscillations. Phase inverter isn't the solution.
题目解析
The correct answer is C: Install parasitic suppressors and/or neutralize the stage. What can be done to prevent unwanted oscillations in an RF power amplifier is to install parasitic suppressors and/or neutralize the stage. Parasitic suppressors and neutralization prevent oscillations. For amateur radio operators, this is important for amplifier stability. Understanding this helps when stabilizing amplifiers.
考试技巧
Prevent oscillations in RF power amplifier = install parasitic suppressors and/or neutralize stage. Think 'P'revent 'O'scillations = 'P'arasitic suppressors/'N'eutralize. Parasitic suppressors and neutralization prevent oscillations. Not minimum loading, not maximum power, not phase inverter - just parasitic suppressors and/or neutralization.
记忆口诀
Prevent oscillations in RF power amplifier = install parasitic suppressors and/or neutralize stage. Think 'P'revent 'O'scillations = 'P'arasitic/'N'eutralize. Parasitic suppressors and neutralization prevent oscillations. Important for amplifier stability.
实际应用示例
Preventing unwanted oscillations in an RF power amplifier: Install parasitic suppressors and/or neutralize the stage. Parasitic suppressors (like ferrite beads) and neutralization prevent feedback that causes oscillations. This is the solution - parasitic suppressors and/or neutralization.
错误选项分析
Option A: Incorrect. Tuning for minimum loading isn't the solution - parasitic suppressors and neutralization prevent oscillations. Minimum loading isn't the solution. Option B: Incorrect. Tuning both input and output for maximum power isn't the solution - parasitic suppressors and neutralization prevent oscillations. Maximum power isn't the solution. Option D: Incorrect. Using phase inverter in output filter isn't the solution - parasitic suppressors and neutralization prevent oscillations. Phase inverter isn't the solution.
知识点
Prevent unwanted oscillations, RF power amplifier, Install parasitic suppressors, Neutralize the stage
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.