0
votes
2answers
47 views

Minimal pulse width to actuate a solenoid

I'm powering a solenoid from a battery, so I want to spend the minimum amount of power to get the job done. In this case the solenoid doesn't even have a return spring, so as soon as the armature has ...
2
votes
1answer
763 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
307 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 ...