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

AC Frequency

  1. Aug 16, 2010 #1
    Can anyone tell me what the most standard way of changing the frequency of an AC power supply is? Can it be done with circuitry or does the method of generation need to be set at the desired frequency?
  2. jcsd
  3. Aug 16, 2010 #2
    The most common is to ensure that the generator is the right frequency.

    If you have to change frequency, a common method is to convert to DC, then back to the desired frequency. If you want merely a harmonic of the original, there are circuits that can do that for you ready made as modules (frequency doublers) depending on the power requirements.
  4. Aug 26, 2010 #3
    Almost every motor (exhaust fans, air handlers, etc.) in a commercial building uses a VFD (Variable frequency drive.) So, id say this is a very common way. http://en.wikipedia.org/wiki/Variable_frequency_drive
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook