Ta DAAAAAAW! Wire came today. If you hears some cussing and what not, the coil Sprang on me and I'll be on the floor looking like something a spider wrapped up !
Posted on: December 06, 2017, 03:41:50 pm
OK, Back at it. Got side tracked on a few things.
Decided to go ahead and try the .2mm (32AWG) wire after reading on the Geotec Forum someone used it with reasonable results.
DC Resistance goes up but it seems with little consequences. Here are some basic numbers but sense I'm going with a 1" or so smaller form I will need a few more wraps or turns of wire to meet the uH numbers.
The As Build :
Diameter: 255mm x 137 mm (one coil)
Wire size: .25mm (30 AWG) enameled
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
Attempted Build:
Tx
30 (AWG) Wire Resistance: 24.378 ohms
Gauge 32 (AWG) 236.22ft Wire Resistance: 38.764 ohms
Rx
30 (AWG) 216.53ft Wire Resistance: 22.346 ohms ohms
32 (AWG) 240ft = 39 ohm
My set up and Deviations marked in red on coil plan.
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« Last Edit: December 11, 2017, 01:15:06 pm by homefire »
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