2016-08-242016-08-242014-09-02http://hdl.handle.net/10919/72728Core loss in an inductor is measured with reduced sensitivity to phase measurement error by connecting a reactive component to resonate with the inductor and thus cancel a portion of the reactive voltage on the inductor; reducing the phase difference between the inductor voltage and current and making the observed power more resistive. The reactive component may be a capacitor for sinusoidal excitation or an inductance such as an air core transformer for arbitrary excitation.application/pdfen-USPatenthttp://pimg-fpiw.uspto.gov/fdd/70/233/088/0.pdf13222235324/222G01R33/14G01R33/12078823370