Which multivibrator functions as a square wave oscillator? ______________
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Answer: B. Astable
Explanation
An astable multivibrator possesses no permanent stable states during its continuous operational cycle. It constantly switches back and forth between two distinct unstable states without external triggering. This continuous oscillation naturally produces a periodic square wave output at the terminals. Multivibrators are electronic circuits used to implement various two-state systems like oscillators. Cross-coupled transistor stages with RC timing networks determine the frequency of square wave generation. Square waves contain a fundamental frequency along with numerous odd harmonic components.
Square wave oscillators are essential clock generators in digital computing and timing systems. Testing electronic filters and amplifiers frequently requires a reliable source of square waves. Microcontrollers utilize similar astable timing principles for internal system clock operations. Monostable multivibrators have only one stable state and generate single pulses upon triggering. Bistable multivibrators maintain two stable states and act as digital memory elements or flip-flops. Other standard configurations do not provide the continuous free-running oscillation needed for square waves.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
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