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Tore Apart a Microwave

Discussion in 'General Electronics' started by MbumboTatum, May 31, 2004.

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  1. MbumboTatum

    MbumboTatum Guest

    Found a big older microwave in alley. Took it apart (mainly with cordless drill
    screwdriver and Phillips bit). I understood that the magnet tube had magnet in
    it. I got 2 fairly strong magnets out of it. They were about the size of a very
    large, very thick washer. That is: ring shaped, flat. I'm guessing that more
    modern microwaves will have smaller, more powerful (maybe some new-age alloy?)
    magnets in them.

    I also kept the fuse and the impressive, sardine can looking capacitor. Set the
    rest of the pile back in the alley by the dumpster.
  2. Robert Baer

    Robert Baer Guest

    Got a good chuckle on that last sentence..

    Yes, you are correct about the magnets.
    Back in the 1960s to 1980s the magnets for microwave tubes were
    Alnico, and were fairly large.
    Now the magnets are made from rare earth powders and are stronger and
    much smaller (as you saw).
    The capacitor can be useful for high energy flash tube use or other
    pulse circuits.
  3. Rich Grise

    Rich Grise Guest

    You threw away the TRANSFORMER??!?!?!?!!!?

    That can be worth some bucks, if only for the scrap iron and copper.
    And you can rewind it to your heart's content, unless it's a ferroresonant,
    in which case it'd probably take a little study.

    Have Fun!
  4. AlWahrabi

    AlWahrabi Guest

    The transformer did look extremely well made and neat. But, as you can tell I'm
    no rocket surgeon. I wouldn't know what to do with it.
  5. Robert Baer

    Robert Baer Guest

    All of the transformers that i have seen in microwave ovens were
    ferroresonant types - hence the capacitor.
    The scheme is to provide (roughly) a constant current, so that the
    variable load (nil in box VS big turkey, etc) will not kill or otherwise
    damage the supply.
  6. ~^Johnny^~

    ~^Johnny^~ Guest

    Now that's a canned answer. ;->

    wide-open at throttle dot info

    "Stealing our copyright provisions in the dead of night when no-one
    is looking is piracy. It's not piracy when kids swap music over the
    Internet using Napster..." - Courtney Love
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