# What is the relationship between frequency and voltage?

#### dante_clericuzzio

Joined Mar 28, 2016
223
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

#### crutschow

Joined Mar 14, 2008
25,242
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).

#### DickCappels

Joined Aug 21, 2008
6,531
Or to restate, there is no fundamental relationship between frequency and voltage.

#### BR-549

Joined Sep 22, 2013
4,938
Voltage is a snapshot of force. Frequency is the movie of force.

#### bertus

Joined Apr 5, 2008
20,649
Hello,

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

Bertus

#### dante_clericuzzio

Joined Mar 28, 2016
223
Hello,

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

Bertus
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.