This one is for people working with electromagnets (more specific, DC) etc. I have a few questions that I am struggling with:
- I am quite comfortable with the concept of the response time (time constant) of a coil in free space, μ0 =4π x 10-7 . The thing I am struggling with is the response time of the whole magnetic circuit (coil, conducting magnetic material, core etc.). How can I calculate that?
- I know that for a compact magnetic circuit a soft magnetic material with a high saturation point (like iron) is required. However, what type of magnetic conductor do you select if you require a fast response time in the magnetic circuit (assuming the coil is fast enough)?
- There are a lot of material available to calculate the magnetic field in a circuit where the core is on the inside of the coil. How would you calculate the magnetic field in a circuit when the core is on the outer diameter of the coil.