Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Modulation ratio of voltage

  1. Dec 2, 2012 #1
    Does any one have any idea about modulation ratio of voltage and modulation frequency in power systems?What is the relation between between two?
     
  2. jcsd
  3. Dec 3, 2012 #2

    Averagesupernova

    User Avatar
    Science Advisor
    Gold Member

    You need to be more specific. AM? FM? Are you referring to % of modulation in AM? Modulation index in FM? Incidentally, there are alot of other modulation schemes that are based on and similar to AM and FM. Referring to one of these?
     
  4. Dec 3, 2012 #3
    It is related to Amplitude Modulation
     
  5. Dec 3, 2012 #4

    Averagesupernova

    User Avatar
    Science Advisor
    Gold Member

    Then there is no relationship between the two. 100% modulation at a modulating frequency of 100 Hz is the same as 100% modulation at 1000 Hz. All it does is move the sidebands from 100 Hz away from the carrier to 1000 Hz away from the carrier. Changing the modulating frequency will not change the percentage of modulation.
     
  6. Dec 4, 2012 #5
    Is the question about an inverter feeding an AC electrical motor?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook