Recent content by merper

So radius of the conducting wire <<<< axial length of solenoid ?

Ok, I'm not sure I understand the implications of this "tight ring" assumption. Is that to say that the cross sectional area of each ring is small compared to the length of the overall solenoid? I guess my topic title left my overall question a bit ambiguous, but my end goal is not learning...

Termo, that's exactly the sort of formula I'm looking for. Cheers! However, I am a bit curious as to where it came from. Like Philip said, the exact derivation does sound extremely tedious. On the other hand, the 1/r decay does seem appropriate since the field is axially confined.

Unfortunately, the length and diameters are the same order of magnitude. The outer layer of the coil is actually the same diameter as the length of the coil(~2in) and the inner diameter is maybe 2/3rds that. I agree that the current is constant. I was just noticing I could increase the...

I'm looking at redesigning a hydraulic solenoid valve with the aim of reducing the package size. The solenoid coil is by far the largest component of the device, with about 4000 coils arrayed in about 90 layers stacked on top of each other. I'm wondering if I can reduce the size by removing some...