What is the relationship between frequency and voltage?

Discussion in 'Wireless & RF Design' started by dante_clericuzzio, Sep 15, 2017.

  1. dante_clericuzzio

    Thread Starter Member

    Mar 28, 2016
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    I would like to know if the frequency and voltage is linear or something else depending on its application. Because i saw one circuit from the texas instrument when the voltage goes up the frequency is low otherwise if the voltage goes down the frequency goes up..i forgot where was that circuit but its RF amplification circuit
     
  2. crutschow

    Expert

    Mar 14, 2008
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    6,768
    Frequency and voltage are related by whatever network the signal is going through.
    For example, a a low-pass filter will give a drop in output voltage with frequency above the filter's corner frequency.

    The term "linearity" does not apply to frequency or voltage by themselves.
    Linearity only applies to the relation between the two (or between any two variables).
     
  3. DickCappels

    Moderator

    Aug 21, 2008
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    Or to restate, there is no fundamental relationship between frequency and voltage.
     
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  4. BR-549

    AAC Fanatic!

    Sep 22, 2013
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    Voltage is a snapshot of force. Frequency is the movie of force.
     
  5. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    You could be talking about a VCO (Voltage Contolled Oscilator).
    In a VCO there is a relation between voltage and frequency.

    Bertus
     
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  6. dante_clericuzzio

    Thread Starter Member

    Mar 28, 2016
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    4
    Yes something like the VCO -- there is that in Texas instrument schematic that shows the lower the voltage the higher the frequency but of course there is a limit point how low it should go otherwise the higher the voltage the lower the frequency.
     
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