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

Can I get exact 110vac in anyway?

  1. Aug 22, 2012 #1
    First of all THANKS A LOT to all those who helped me by replyig to my earlier posts.

    Hello Everyone,
    I have 220v supply in my area with a voltage fluctuations.
    I want to run 5 amp, 110vac 60hz weighing machine on it with a 220v to 110v inverter that doesn't survives voltage fluctuations.
    What inverter, converter, ups, backup power supply tool i need to use that never goes to 109vac or 111vac & stables at 110vac?
    Is there anything manufactured or available on market that can HOLD & GRIP 110vac for me from 220vac fluctuated power supply?
    Awaiting reply.
  2. jcsd
  3. Aug 22, 2012 #2


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    There will always be fluctuations of mains voltage often easily up to 10 - 15%

    To drop that to just a few % you could use a battery powered inverter which would be much more stable some I have seen are usually 5% or less in output fluctuation.

    But when it comes down to it, if yoo have a mains appliance of some sort and it cannot handle a fluctuation of 10 - 15% then its design is extremely poor and you should probably be looking for a more reliable piece of equipment

  4. Aug 22, 2012 #3

    jim hardy

    User Avatar
    Science Advisor
    Gold Member

  5. Aug 25, 2012 #4


    User Avatar

    Staff: Mentor

    I think you will have to rely on google searches. You haven't indicated whether it is necessary to convert the frequency, also, and that will be important. You say your weighing machine requires 60Hz, but if your country's electricity supply is 50Hz you should first check the machine's documentation, you may discover it can also work off 50Hz. Whatever it needs, you will have to be sure to provide.
  6. Aug 25, 2012 #5


    User Avatar
    Science Advisor

    Hi Azee. How exactly did you come to the conclusion that your machine requires a voltage tolerance of better than +/- 1%

    If this is a commercially available machine then it is overwhelming unlikely that it would really require such a tight tolerance, for the simple reason that nowhere in the world is power delivered at that level of tolerance!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook