how can i find AC frequency from DC?

thebluser

can you tell me all of the equations to find AC frequency? also, what is AC voltage? is it somehow linked to frequency?

jedishrfu

wikipedia may help:

http://en.wikipedia.org/wiki/AC_current

thebluser

no, no it didn't.

berkeman

Your questions are not making much sense yet. What is the context of your question? Why didn't the wiki article help?

thebluser

my question is if AC voltage is somehow linked to AC frequency

berkeman

Yes. Any AC waveform will have a frequency or range of frequencies (and potentially a DC offset as well). If the AC waveform is a pure sine wave, it will have one frequency.

berkeman

Maybe this article helps some? http://en.wikipedia.org/wiki/Frequency

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trollcast

Assuming you're talking about purely sinsoidal waves.

The RMS voltage doesn't depend on the frequency since it is just a measure of the average voltage (or the average of the amplitude of the sine wave). This isn't affected by the frequency as if you change the frequency you only change the sine wave in the horizontal or time axis so this doesn't affect the amplitudes.

thebluser

thanks for your help.