Power in flyback converter

There's the crazy calorimetic method. :P Example:

I do efficiency estimates in spice. Core loss by software.

D from BC British Columbia Canada.

Yes I've heard of it Ridley and Dixon reference it in there publications. I'm under crippling economic constraints though what with the price of water, wood, and air and not to mention complexity; the method is out of reach;) What do you do stick one finger on the DCbus and one finger in the water and get the coroner to measure the splatter pattern of your heart?:)

Yes spice can give reasonably accurate results if you take the time to model all components and trace parasitics factor in tolerances temperature dependences etc. but I still prefer to actually measure. I wouldn't rely on it solely, any analytical method spice are manual calculation gives theoretical results which should be tested and verified by measurement under worst case conditions. Failure to do so can result in some embarrassing and expensive situations .Exploding laptops comes to mind.

Those measurements seem accurate enough when compared to spice and manual calculations and the killawatt. Not so critical for this 10.5W but for the 70W flyback and 200W forward converter I should be able to use it for reasonably accurate results. Or at least good enough I can be sure my fuse, cap, bridge, CM choke and SMPS core are properly sized.

Thanks