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Any fun parts in a salvaged electronic bathroom scale?

Discussion in 'Electronic Basics' started by Ivan Vegvary, Feb 12, 2013.

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  1. Ivan Vegvary

    Ivan Vegvary Guest

    Subject says it all.
    Ivan Vegvary
  2. Why ask?

    If you're going to toss it out anyway, or find one lying on the sidewalk,
    you might as well take it apart. You're likely to get some parts, just
    like from any electronic device, and yes, depending on how they are
    designed, there may be something nifty in there related to converting
    weight to voltage. Open it up and see. If it does convert weight to
    voltage (I suppose there are other ways), it might mean a digital meter of
    some sort. It really depends on what's in there.

    Keep in mind that sometimes it's best not to strip down the parts. In
    some devices, the parts will be very dedicated, and so that IC or this IC
    may not have much use except as originally used in the device. Once that
    happens, the parts around it wll be the parts you need to use the IC
    later, so you might as well keep it intact. For that matter, if the IC is
    obscure, the peripheral parts may show you how to hook it up.

    So if you keep it intact rather than as a source of small parts and maybe
    that exotic IC, once you find a use for it, you can either use the whole
    board intact (or cut out the pertinent part of the board) or at the very
    least trace out the circuit, remove the parts and then build it up again
    on a smaller circuit board.

    That goes for everything. If there's a switching supply, keep it intact
    (sometimes noting where it came from helps to provide information about
    the output voltages and currents), because it may be most useful as a
    switching supply. There may be a time when the parts become more valuable
    than the full supply, but until that day, keep such things intact and get
    the ceramic capacitors and generic small signal transistors off something
    else, like a tv set or VCR.

  3. Ivan Vegvary

    Ivan Vegvary Guest

    Thanks Michael !!

    Ivan Vegvary
  4. Ivan Vegvary

    Ivan Vegvary Guest

    Thanks everyone. Been saving three old scales. Two are dead and one is intermittent. Gather the LCDs and battery connectors are worthwhile, for sure.

    Ivan Vegvary
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