A multivibrator is a circuit which generates

This question was previously asked in
IPRC (ISRO) Technician B (Electronics) 2018 Official Paper (Held on 22 April 2018)
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  1. Square wave
  2. Sine wave
  3. Triangular wave
  4. Sawtooth wave

Answer (Detailed Solution Below)

Option 1 : Square wave
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Detailed Solution

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A multivibrator using a 555 timer:

An astable multivibrator is also called a Square wave generator or Free running oscillator.

It generates a square wave output.

The schematic diagram of the Astable multivibrator using a 555 timer is shown below.

F1 Neha. B 18-11-20 Savita D1

The output waveform:

F1 Neha. B 18-11-20 Savita D2

Hence, The output waveform of a multivibrator is a Square wave.

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