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getting a 220V step DOWN converter...

Discussion in 'Electronic Basics' started by Steen Morthorst, Sep 17, 2003.

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  1. Hi Group.

    Sorry if this is an odd request. I'm residing in Denmark and need to
    buy a 220->110V step down converter for a 500W Kitchen Aid(a big
    fella).

    I'm looking for a physical store in the DC or Virginia area, which is
    selling them. Radio Shack only carries the small ones and all stores I
    can find on the internet are located in Chicago.

    Hope someone can help me out here.....

    Sincerely Steen Morthorst
     
  2. Dan Fraser

    Dan Fraser Guest

    If you are trying to run a 110V appliance with a motor with brushes,
    from 220V, Radio Shack have a converter rated at about 15 Amps. It
    consists of a diode so the appliance is run from half wave rectified DC
    power. These work fine for brushed motors and lamps. However, they will
    not run electronics.


    --
    Dan Fraser

    From Costa Mesa in sunny California
    949-631-7535 Cell 714-420-7535

    Check out my electronic schematics site at: http://www.schematicsforfree.com
    If you are into cars check out www.roadsters.com
     
  3. N. Thornton

    N. Thornton Guest


    Hi. I have reservations about this, for 2 reasons.

    1. With a lamp, Twice the V and thus twice the i means 4 times the
    power in one half cycle. Diode means halving that, so your bulb would
    run at 2x rated power. I cant see it lasting too long!

    2. With a motor there are also issues of saturation.

    A better solution would be a series inductor or capacitor with your
    motor. In the case of capacitors it is esential to calculate
    correctly, as the wrong value can be a disaster.

    If the OP lacks the skill for that, a series 110v 500w halogen lamp
    should do it. Just wear shades :) You may find tho that the motor
    heats up a bit faster on light loads, since at less than full load it
    will see higher V.


    Regards, NT
     
  4. The Captain

    The Captain Guest

    Steen,

    since yuare in Denmark, you can easily access the RS website in the
    UK, at rswww.com. They have an excellent range of 110 to 230 volt and
    vice versa transformers, and anything else you might wanmt to order on
    the electrical/electronic side. You will need to register, but that
    is free, and after that you can range through one of the best
    electrical and electronic catalogs inthe world. I know I sound like
    an advertisement for RS, Radio Spares, by the way, not Shack, but they
    compare so well to the fractured and inefficient US structure that
    there really is no comparison.

    I use them for ordering parts for prototypes and small production
    runs, and I live in New York State.

    John
     
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