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  • Why is the frequency of pulsating dc is more than actual alternating sine wave

    Naga teja

    Member

    Updated: Oct 26, 2024
    Views: 1.1K
    why is the frequency of pulsating dc is more than actual alternating sine wave
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  • Jeffrey Arulraj

    Member • Nov 28, 2012

    Pulsating DC signal has higher frequency can not be said just like that buddy

    Do tell us the source of the pulsating DC signal if it is an SMPS output then yes

    Other wise it is hard to tell
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  • soni.sapan

    Member • Nov 28, 2012

    For sine wave it takes 0 to 2pie for comleting cycle but in pulsating DC its only takes 0 to pie for completing a cycle, so it only takes half time for pulsating DC to complete a cycle.
    thats why pulsating DC has double frequency then Sine wave.
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  • Naga teja

    Member • Nov 28, 2012

    ok i have one doubt.for dc frequency should be nearer to zero. so for a pulsating dc the frequency should be between sine wave and pure dc. here it is greater than sine wave.can u explain
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  • Naga teja

    Member • Nov 28, 2012

    a sine wave is conveted to pulsating dc.but the frequency is increased than the sine wave frequency.but for dc the frequency should be less than sine wave frequency know
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  • Jeffrey Arulraj

    Member • Nov 29, 2012

    Naga teja
    ok i have one doubt.for dc frequency should be nearer to zero. so for a pulsating dc the frequency should be between sine wave and pure dc. here it is greater than sine wave.can u explain
    Naga teja
    a sine wave is conveted to pulsating dc.but the frequency is increased than the sine wave frequency.but for dc the frequency should be less than sine wave frequency know
    Both have the same solution DC never has frequency
    Next pulsating DC has frequency not of it's own. The frequency is do the AC ripple present in the signal. When the ripple is removed using filter the frequency vanishes and becomes pure DC

    This is similar to a super imposition of DC and an AC wave more or less this analogy holds good
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