A person I am working with is trying to determine the efficiency of a pulse transformer and I am confused by the procedure.
We know the input energy because a capacitor is discharged across the primary.
The way my colleague measured output energy was look at an oscilloscope measurement of the output voltage pulse across a non inductive resistor, and find V2/R integrated across the pulse duration.
This formula assumes that I=V/R, but is that true for a step up transformer? If we doubled turn ratio and doubled pulse voltage we would calculate bigger energy with this formula, even though the current is reduced so energy is the same.
Can someone explain if this measurement approach is right or wrong? And why or why not?