Which of the following is used to generate PDM?(a) Monostable multi-vibrator(b) Bistable Multivibrator(c) Either monostable of free running multi-vibrator(d) Astable MultivibratorThis question was posed to me in quiz.My question is taken from Frequency Discrimination Method in chapter SSB Modulation of Analog Communications

Which of the following is used to generate PDM?(a) Monostable multi-vi

1.	Which of the following is used to generate PDM?(a) Monostable multi-vibrator(b) Bistable Multivibrator(c) Either monostable of free running multi-vibrator(d) Astable MultivibratorThis question was posed to me in quiz.My question is taken from Frequency Discrimination Method in chapter SSB Modulation of Analog Communications
Answer» Right option is (a) Monostable multi-vibrator For explanation: PULSE DENSITY MODULATION (PDM) is used to represent an analog signal USING a digital signal. For generating PDM, a monostable multi-vibrator is used, which is externally triggered and has only one STABLE state.

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