This is what the Build Document Calls for.
Diameter: 255mm x 137 mm (one coil)
Wire size: .25mm (30 AWG) enameled Tx approx 99 turns of wire. Rx Approx 104.
Tx inductance: 6.0mH
Tx resistance: 18 – 25 Ohms
Tx resonance - About 14.5 kHz
Rx Inductance: 6.5mH
Rx resistance 18 – 25 Ohms
Rx resonance with 15nF – About 16.1 kHz
Did not have enough 30AWG to do the job. I only had 28AWG at hand and Deviated from the Prescribed Number of winding's and Coil dimensions.
Only completed the Tx Coil this far.
I ended up with 166 turns of wire due to the Wire Size and Smaller Form.
Shield is Copper Tape. Used it a pile on simple Mono Coils with good luck. The stuff is a pain to wrap without tearing. The foils not much thicker then the foil of a Gum Wrapper.
As seen on my Chines Special Meter (Gotta Love those Chinese characters for the mH, Eaa?) I achieved the 6mH and Resistance required. . Not seen is after foil it dropped to 5.97Mh. This calculates out the machine should be running 14353.122 Hz with this coil. This will work fine getting your machine up and ruining. My plan is to build one as described and modify the second to run twice the normal Freq . 30Khz. If this works as Planed I should end up with something like a 30Khz LoBo.
This Coil is only for Testing but may be the bases for a good Sniper Coil for the other machine, Eaa?
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http://www.thunting.com/smf/index.php/topic,65709.msg320772.html#msg320772
There are 4 attachment(s) in this post which you can not view or downloadPlease register for viewing them. Copper Tape Shield.jpg RxCoilSpecs.jpg ShieldSolder.jpg Start2.jpg
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