i have tested the coils again they both seem to measure the same at the inner edge of the coils, at about 4.0mT so I'm guessing the calculations are correct and its the magnetic field shape that is affecting the output i.e. the magnetic field strength is weaker in the center of the larger coil...
need help with coils and calculations
i have a 40mm inner diameter coil with 52 turns 0.4mm wire 3mm height (simple round/square type coils) and wish to match the output (mT) with a 60mm inner diameter coil still using 0.4mm wire will remain 3mm height how many turns is required ?
the actual...