What is a characteristic of a monostable multivibrator?
The correct answer is A: It switches temporarily to an alternate state for a set time. What is a characteristic of a monostable multivibrator is that it switches temporarily to an alternate state for a set time. Monostable has one stable state and one temporary state. For amateur radio operators, this is important for digital circuits. Understanding this helps when working with timers.
Exam Tip
Monostable multivibrator characteristic = switches temporarily to alternate state for set time. Think 'M'onostable = 'M'omentary state (temporary). Monostable has one stable state and one temporary state. Not continuous square wave, not data storage, not constant voltage - just temporary state switch.
Memory Aid
"Monostable multivibrator characteristic = switches temporarily to alternate state for set time. Think 'M'onostable = 'T'emporary state. Monostable has one stable state and one temporary state. Important for digital circuits."
Real-World Application
A monostable multivibrator: A characteristic is that it switches temporarily to an alternate state for a set time. After the set time, it returns to its stable state. This is the characteristic - temporary state switch.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. Producing continuous square wave isn't monostable - monostable switches temporarily. Continuous square wave isn't the characteristic.
Option C: Incorrect. Storing one bit of data isn't monostable - monostable switches temporarily. Data storage isn't the characteristic.
Option D: Incorrect. Maintaining constant output voltage isn't monostable - monostable switches temporarily. Constant voltage isn't the characteristic.
题目解析
The correct answer is A: It switches temporarily to an alternate state for a set time. What is a characteristic of a monostable multivibrator is that it switches temporarily to an alternate state for a set time. Monostable has one stable state and one temporary state. For amateur radio operators, this is important for digital circuits. Understanding this helps when working with timers.
考试技巧
Monostable multivibrator characteristic = switches temporarily to alternate state for set time. Think 'M'onostable = 'M'omentary state (temporary). Monostable has one stable state and one temporary state. Not continuous square wave, not data storage, not constant voltage - just temporary state switch.
记忆口诀
Monostable multivibrator characteristic = switches temporarily to alternate state for set time. Think 'M'onostable = 'T'emporary state. Monostable has one stable state and one temporary state. Important for digital circuits.
实际应用示例
A monostable multivibrator: A characteristic is that it switches temporarily to an alternate state for a set time. After the set time, it returns to its stable state. This is the characteristic - temporary state switch.
错误选项分析
Option B: Incorrect. Producing continuous square wave isn't monostable - monostable switches temporarily. Continuous square wave isn't the characteristic. Option C: Incorrect. Storing one bit of data isn't monostable - monostable switches temporarily. Data storage isn't the characteristic. Option D: Incorrect. Maintaining constant output voltage isn't monostable - monostable switches temporarily. Constant voltage isn't the characteristic.
知识点
Characteristic, Monostable multivibrator, Switches temporarily, Alternate state, Set time
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.