Metal Detector Magic?
I’m always amazed by technology and how it can “change the game” in so many fields. And I’m particularly interested in metal detecting technology. And let’s face it, technology can be cool.
Bruce Candy (of Minelab fame) has a patent application (Publication NumberUS20140232408 A1) that has seemed to spark interest in the gold prospecting community. You can read the technical details here: http://goo.gl/wkNUyF. In case you’re wondering, that what’s called a “Google Short Link”. Much easier than the actual URL of https://www.google.com/patents/US20140232408?dq=ininventor:%22Bruce+Halcro+Candy%22&hl=en&sa=X&ei=ujwFVNzMDaL7iwLex4DQCQ&ved=0CDsQ6AEwBA. How cool is that?
Here’s the Abstract:
“A metal detector transmitting, through a transmit coil, a repeating transmit signal cycle, which includes at least one receive period and at least one non-zero transmit coil reactive voltage period; and sensing a current in the transmit coil during at least one receive period to control a magnitude and/or duration of the at least one non-zero transmit coil reactive voltage period such that the average value of the current during at least one receive period of every repeating transmit signal cycle is substantially constant from cycle to cycle, and the current during at least one receive period is substantially independent of the inductance of the transmit coil.”
Okie dokie, from what I’ve read this sounds promising. My wish list is still a Pulse Induction metal detector that can discriminate gold from ferrous junk with either a DD or monoloop coil. I’ve heard claims of one and claims of the White’s TDI being able to do this but have yet to see it materialize. If you have any thoughts feel free to share them below or on our forum. And if you have time to watch a 15 minute video on the future of technology I recommend the one below. And on that note I’ll have you know that, each time I shut my computer down, I throw my head back in maniacal laughter and scream “Fool! I was only using you!” 
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