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Hello! Could this work? I've got some aluminum tape that goes around windows for home alarms. Combined with foam weatherstrip tape as a spacer, I was hoping to make a searchcoil that would be equal to basketweave or spiderweb designs - without all the negative traits. It could be wound flat on the table or inside a form, then dipped to "fix" the windings and protect the foam from rotting. Conductive paint could then be used as a second coat, if the Faraday shield gap can be created by masking. A stronger coil housing would sure be needed in the field! Thanks, 'bye for now, Tim
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Re: Has foil tape ever been used to make a spiral coil?
I suspect resistance might get a little high. That tape is pretty thin, isn't it?
--Carl -
Re: Has foil tape ever been used to make a spiral coil?
Here's the experiment I ran: 15' of R.S. #49-502 foil tape (120' X 3/8", $5.99) |*| 15' of 18 ga. solid hook-up wire (PVC covered) |*| 10 - 100 ohm 1/4W resistors, twisted together = 10 ohms total |*| 6V alkaline lantern battery |*| cheap EVM. The battery read 5.98 with no load, 5.42 with 10 ohms (got warm!) across it, 5.45 with 10 ohms and 15' of 18 ga. in series, and 5.49 with 10 ohms and 15' of foil tape in series. 120' of foil could make at least two searchcoils. Thanks, 'bye for now, TimComment
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