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How does the BFO metal detector works?

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  • #16
    The reason of I use cd40106 is I just have one... Another question is cd4069 ok?

    to rumcajs, thank you for your recommendation, but schematic picture on the site can't be displayed.

    to skippy, I'll shelving the pocket metal detector and look at the Simple BFO metal detector.

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    • #17
      The link Rumcajs posted just opened fine for me. Already had it on my hard drive.
      Use the IC the author used. The IC data is available on the web.
      eric

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      • #18
        Originally posted by Overtheedge View Post
        The link Rumcajs posted just opened fine for me. Already had it on my hard drive.
        Use the IC the author used. The IC data is available on the web.
        eric
        I am from China, our government have made a firewall called GFW to block some foreign URL. So I can't see some site.

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        • #19
          Ah, I understand.
          eric

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