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Voltage Converter Question 210 to 120 volts

Discussion in 'Electronic Basics' started by Hilly, Aug 5, 2005.

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  1. Hilly

    Hilly Guest

    I am sending a fax machine that the power specifications state that it
    uses 5 watts in standby and maximum of 100 watts. I was looking at the
    converters on the market and was confused as to which type I would need
    for this device. There were 50 - 1600 watts devices and up to 50 watts
    devices. As the watts used can go up to 100 on the fax depending on
    what it is doing I assume that I need the 50 - 1600. I just want to
    make sure that the 50 minimum would not affect the device.

    Thanks

    Hilly
     
  2. JeffM

    JeffM Guest

  3. mike

    mike Guest

    Make sure you get a transformer.
    There are many devices made for hair dryers etc. that may damage...
    as in "kill it dead"... your fax machine.

    Agree that it might be cheaper to purchase the correct fax machine
    locally. Transformers are heavy to ship.
    mike

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  4. Bob Masta

    Bob Masta Guest

    Are you sure you need any converter at all? Many
    consumer electronics devices these days use
    switching power supplies, and have a small 120/240
    switch typically right next to the power receptacle. It's
    usually a recessed slide switch you activate with a
    screwdriver blade.

    Best regards,


    Bob Masta
    dqatechATdaqartaDOTcom

    D A Q A R T A
    Data AcQuisition And Real-Time Analysis
    www.daqarta.com
    Home of DaqGen, the FREEWARE signal generator
     
  5. Hilly

    Hilly Guest

    The fax only cost me $30 and the converter is around $6 and pretty
    small so I don't think I could get a 220 volt fax or one with with a
    switch for that cheap. My son in law has been using these converters on
    all type of equipment with no problems. It is also a step down
    converter as it takes the 220 volts and sends only 110 volts so it
    doesn't need to be a big transformer.
    My only question was the fact that the 50 - 1600 said minimum 50 watts
    as a plug normaly has no converter I assume it always send 110 volts
    yet it doesn't hurt the appliance.
     
  6. JeffM

    JeffM Guest

    ...the converter is around $6...
    If one of those devices was not a fax machine, beware.
    As Mike has already said,
    hair-dryer-type converters will only work on the simplest of equipment.

    I don't think you will get a 100W **transformer** for 6 bucks.
    http://www.mouser.com/index.cfm?&ha...*110V*+*100VA*&Dk=1&Ns=SField&N=142&crc=false

    Here's my original idea with a $24 cutoff this time:
    http://froogle.google.com/froogle?s...title:Replacement+-intitle:pack+-intitle:roll
     
  7. John Fields

    John Fields Guest

    ---
    If the converter said "minimum 50 watts", that means that you have
    to put at least a 50 watt load on it before it'll work properly.

    So, since your fax is only using 5 watts on standbdy, what could
    happen is anybody's guess. My guess would be that the output would
    go out of regulation, which could fry your fax.

    The most reliable solution, as someone has already posted, would be
    to use a transformer. I suggest a 220V to 110V isolation
    transformer rated at 150VA.
     
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