What is dc component for digital signals?

isha123
isha123
@isha123-DDef7a • Oct 26, 2024

I read that when voltage level is constant for a while,spectrum creates very low frequencies.How are voltage levels related to frequency?

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  • pratap singh, upendra
    pratap singh, upendra

    @pratap-singh-6xlmve • Aug 27, 2015

    in what context are you asking this question...
    Could you give me some more detail?

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  • Vishal Sharma
    Vishal Sharma

    @vishal-pysGmK • Aug 27, 2015

    #-Link-Snipped-# #-Link-Snipped-# Is this question in the right section?

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  • Ankita Katdare
    Ankita Katdare

    @abrakadabra • Aug 27, 2015

    Vishal0203#-Link-Snipped-# #-Link-Snipped-# Is this question in the right section?

    Moved to Electrical. đź‘Ť

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  • pratap singh, upendra
    pratap singh, upendra

    @pratap-singh-6xlmve • Aug 28, 2015

    "voltage level is constant for a while,spectrum creates very low frequencies"

    Although it may look that voltage has reached a steady state, it is never the case. In fact any practical dc voltage will always have some ac component (such as electronic noise etc.). The frequency of these noise components appears in the spectrum of a dc voltage signal.

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  • Jeffrey Arulraj
    Jeffrey Arulraj

    @jeffrey-xA7lUP • Sep 2, 2015

    isha123I read that when voltage level is constant for a while,spectrum creates very low frequencies.How are voltage levels related to frequency?


    Actually Voltage is defined as Rate of change of Electric Field variation in a Medium.

    So when a signal has a constant Voltage Value, then you should know there is no significant variation in Electric field as well(Integral of Voltage is Electric field).

    With this idea adding to the fact that most signals are EM in nature results in generating very low frequency signals.


    P.S: DC Component of a signal is different from the above mentioned answer. Be more specific in your question next time.

    Have fun

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  • isha123
    isha123

    @isha123-DDef7a • Sep 4, 2015

    #-Link-Snipped-# thankyou so much

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  • isha123
    isha123

    @isha123-DDef7a • Sep 4, 2015

    #-Link-Snipped-# #-Link-Snipped-# I actually came across this while reading digital data transmission in computer networks.

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  • Vishal Sharma
    Vishal Sharma

    @vishal-pysGmK • Sep 4, 2015

    isha123#-Link-Snipped-# #-Link-Snipped-# I actually came across this while reading digital data transmission in computer networks.

    I don't see that in the question.
    Anyway, as samuel said, be more specific next time!

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