A bi-stable multi-vibrator has how many stable states?

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MPPKVVCL Jabalpur JE Electrical 16 August 2018 Official Paper
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  1. Two 
  2. Three
  3. One
  4. No stable states are present

Answer (Detailed Solution Below)

Option 1 : Two 
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Detailed Solution

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The correct answer is option 1):(Two)

Concept:

Bistable multivibrator:

  • A Bistable multivibrator has both two states stable. It requires two trigger pulses to be applied to change the states. Until the trigger input is given, this multivibrator cannot change its state.
  • A Bistable Multivibrator has two stable states. The circuit stays in any one of the two stable states. It continues in that state, unless an external trigger pulse is given. This Multivibrator is also known as Flip-flop.

F1 U.B Madhu 09.05.20 D3

Additional Information

  • An Astable multivibrator is a circuit that automatically switches between the two states continuously without the application of any external pulse for its operation, i.e. it has no stable state. As this produces a continuous square wave output, it is called a free-running multivibrator.
  • A Monostable multivibrator has a stable state and a quasi-stable state. This has a trigger input to one transistor. So, one transistor changes its state automatically, while the other one needs a trigger input to change its state.
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