hey laser cutting is usually a decent way to prototype a transformer core geometry w/o having to go throgh all the tooling charges or a die insert in stamping tool. usually will laser cut laminates & then assemble in small quantities. not econ feasible for high volume...
a caveat though...
real power is provided given the load sees a voltage & current of the same frequency that has at least some components in phase. reactive power is that power, for example in a transmission line that is 'sloshing around' but not delivering any work to your load. uncompensated inductance is...
