I have a few questions about the reactance of inductors at certain frequencies.
I have been working on a project that involves flipping the field in a solenoid with an air core at ~10-20 kHz with a square wave. However, I have encountered a few problems.
What would the equation for inductive reactance be with a square wave? The general equation is \$X=2\pi fL\$ but I am pretty sure this only works with sinusoidal functions. Could breaking down the square wave and solving for the reactance of each harmonic work? This would give a huge reactance because those frequencies get pretty high.
I will probably end up stepping down the voltage and using an oscilloscope but it would be nice to know beforehand.
Also, what might be some other implications of switching a magnetic field of ~30 Amps and ~200 Gauss. I know that there is some delay between the voltage being applied and the current rising but that is small enough for me to disregard.