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High frequency

Discussion in 'General Electronics Chat' started by Shadow_warrior, May 27, 2018.

  1. Shadow_warrior

    Shadow_warrior Member

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    How does high switching frequency accounts for low accoustic noise levels?
     
  2. ronsimpson

    ronsimpson Well-Known Member Most Helpful Member

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    More information please.

    Switching what?
    Acoustics noise?
     
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  3. cowboybob

    cowboybob Well-Known Member Most Helpful Member

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    Gonna take a guess here (as ron noted, some more context would be useful):

    First I'll assume that by "switching frequency", you mean that of a DC-DC (or AC-DC) power source (PS). And then another assumption is that the PS is supplying an audio circuit.

    With those assumptions, high(er) switching frequencies would be, ideally, less likely to interfere with or alter the audio signal(s) being processed, resulting in reduced or eliminated "accoustic noise levels", i.e., harmonics, distortion, etc..

    Like I say, a guess.
     
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  4. dave miyares

    Dave New Member

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  5. MikeMl

    MikeMl Well-Known Member Most Helpful Member

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    If it switches above the range of human hearing, then you might not hear it but your dog might ;)
     
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  6. tcmtech

    tcmtech Well-Known Member Most Helpful Member

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    Our hearing only goes up to around 20,000 Hz with most people ( far less if you are older) so any frequency above that is basically silent to us beyond any sub harmonics it may have.
     
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  7. AnalogKid

    AnalogKid Well-Known Member

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    Physics.

    ak
     
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  8. dave miyares

    Dave New Member

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  9. dknguyen

    dknguyen Well-Known Member

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    more like biology
     

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