Deep Dive: E7A06
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.
Why Other Answers 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.
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 Example
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.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E7A
Reference: 2024-2028 Question Pool · E7 - Practical Circuits
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E7A topic.