Coil Inductance Calculator

Boards came in. Results varied, but at least it provided some valuable data. The coil parameters are written on the board silkscreen. All of the copper weights were 1oz/ft^2.

Here are the results of my measurements with a quality LCR meter.

2.545μH coil: (L = 2.68μH)(R = 1.4Ω)(Q = 0.013)
2.834μH coil: (L = 2.11μH)(R = 1.2Ω)(Q = 0.012)
2.119μH coil: (L = 2.13μH)(R = 0.9Ω)(Q = 0.016)
1.025μH coil: (L = 0.79μH)(R = 0.05Ω)(Q = 0.06)
1.767μH coil: (L = 1.18μH)(R = 0.4Ω)(Q = 0.017)

I think most interesting was the 2.119μH coil, which was spot on. It was composed of 8 turns, 4 on top and 4 on the bottom, which all traveled clockwise. The board thickness was the standard 1.6mm FR-4.

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