Experimental magnetizer for buried irons

bill93 · 2021-09-04T23:27:00Z

I've been dreaming for a long time about ways to find out if there is a buried rebar at one of the church lot corners where it seems likely there was significant fill, and under a large power line where the Shoenstedt has so much hum it is hard to sense delicate changes. It wouldn't be good to dig a huge hole looking for it, since there is at least a foot discrepancy depending on where you measure from.?ÿ So I have an engineering study underway for a method to enhance the magnetization of such an iron.It uses a capacitor bank charged to 150 to 200 volts and dumps the charge into a coil lying on the ground over a suspected site.?ÿ The equations say, surprisingly, that it doesn't matter how many turns of wire are in the coil other than to slow down the discharge pulse.?ÿ More wire makes stronger field at the same current, but the additional resistance reduces the current for a given voltage so the field doesn't change. I have saved a pile of 9V batteries changed out from smoke detectors and wireless mics and strung them together to charge the capacitors.?ÿ It's amazing how much oomph you can get out of those puny batteries when you store it up in the capacitors. I tried it out and found a vertical 10d nail 6 inches down - surely not the 1958 monument.?ÿ I replaced it with a non-metallic rod and tried again, but found no other signal, so I put the nail back.

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Posted : September 27, 2021 9:44 pm

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Experimental magnetizer for buried irons

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