2
votes
1answer
639 views

How to determine the force of a solenoid based on inductance

I'm looking to potentially build my own small solenoids, I thought perhaps that I could take an Air core inductor, a spring, piece of plastic, and conductive core and build my own. Is there a way to ...
5
votes
1answer
289 views

How to estimate inductive coupling between distant air coils

I have two air coils. They both have diameter d. There is a distance D between their centres. D is much greater than d (more than 10x greater) Both coils are at different angles, a and b, relative ...