Multi-vibrators can be used to produce which type of signals?

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RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 3)
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  1. Triangular wave
  2. Impulse
  3. Sine wave
  4. Square wave

Answer (Detailed Solution Below)

Option 4 : Square wave
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  • An astable multivibrator is a square wave generator. 
  • Astable multivibrators generally have an even 50% duty cycle.
  • It means 50% of the cycle time the output is “HIGH” and the remaining 50% of the cycle time the output is “OFF”.
  • A free-running multivibrator that has no stable states but switches continuously between two states this action produces a train of square wave pulses at a fixed frequency or constant frequency.

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