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Is there a formula you can use to figure out what gauge wire and how many turns are needed to build a concentric coil for a motion type detector. Example, building a 15" coil for a CZ-20. Thanks, Mark
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Question...
If I know the wire guage for say TX is 20awg, and the resistance should be 1ohm no matter if I'm winding a 6 inch coil or an 18 inch coil, I'm going to need the same length of wire for either coil right so is there a calculator out there in which you could input the desired resistance, wire guage, and have it return the length of wire in feet or inches? Or maybe just a resistance per foot wire guage table? Or does magnet wire vary too much for this approach?Comment
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Re: Question...
It Shouldn't be Necessary to be exactially 1 ohm. Most PI Detectors have a reasonably low resistance coil, but its not critical.
Besides on Bigger coils you tend to use Bigger wire than on smaller coils.Comment
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Re: Question...
Hi Charles,
Magnet wire shouldn't vary that much so you should be able to calaculate the length needed based on the resistance of the wire and the wire size.
YOu might go to www.wiretron.com and download their little wire program. The info in this program is quite extensive and should meet your needs, I would think. The Ohm's per foot calculator should surfice to obtain the basics and a simple calculator should help with the rest. The rest of the Wiretron program provides a lot of other info about wire that can be useful. At least, it has been for me.
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