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Mystery device

Discussion in 'Electronic Design' started by D Yuniskis, May 28, 2010.

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  1. D Yuniskis

    D Yuniskis Guest


    Pulled this out of the recycle bin as it "looked
    interesting" :>

    Fully populated PCB but no case to put it in context.
    No useful markings on the silkscreen.

    10 LEDs arranged in a semicircle -- green followed
    by red (e.g., like a meter with a - and + zone).

    One power indicator.

    One push button (power on/off)

    9V battery powered.

    Turning it on appears to do a lamp test (though this
    could just be a noise spike that temporarily drives
    the "meter" up to MAX).

    Center of board has a foil pattern similar to what you
    would find *in* an RFID tag (1.5" concentric squares).
    I.e., suggests it is an antenna.

    Now, what might this be *used* for?

  2. Microwave oven leakage tester?
  3. GregS

    GregS Guest

    Sounds like the thing in my hand.

    i bought it surplus several years ago. Probably Electronic Goldmine.
    A magnetic field detector.


  4. GregS

    GregS Guest

    That thing used to go haywire near CRT's. Probably one of the main uses
    at the time to check for fields. Yes it works fine on my Fluke
    analog/digital scope.

  5. GregS

    GregS Guest

    i wonder if we all fell a little better away from the computer CRT's ??
    Is there any history event trend ?

  6. D Yuniskis

    D Yuniskis Guest

    Hi Spehro,

    Ah, that's possible! I found a bunch of RC kit in
    the same pile so wondered if maybe used to measure
    signal strength (though I would assume you would
    empirically determine this -- e.g., when plane
    *crashes*, etc. :> )

    I'll see what it does near the microwave...
  7. Be sure to defeat the interlocks to give it plenty of signal.
  8. D Yuniskis

    D Yuniskis Guest

    Ah, I was just going to CRAWL IN with it...
  9. Like on Kick Ass?
  10. Jamie

    Jamie Guest

    Some one looking for me?
  11. Grant

    Grant Guest

    Assuming s/fell/feel/ ? Recently I three broken LCD monitors, fixed
    two of them so no CRTs here now, feel much better!

  12. D Yuniskis

    D Yuniskis Guest

    Hi Robert,

    Well, *this* one lights up like a christmas tree when held
    in front of the microwave! :< I wonder if any of my body
    parts are glowing??? :-/

    Curiously, doesn't seem to react to the WiFi (which I
    thought a good possibility) -- which I thought was roughly
    the same band (?).
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