As I understand, it is possible to get a rough estimation of an EI core transformer's power (VA) by finding the area in cm of the center leg (the part under the winding, not the full height). Square that figure to get the rough power. I'm not clear on what dimensions to use. Using the diagram, what do I use? A*B, C*B, or ??
Thanks
Thanks
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I'm no expert on transformer design but I vaguely recall there are certain dimensional ratios that lend themselves to lower manufacturer production costs when stamping out the metal. You'd have to determine if it has that dimensional ratio before you could assume that multiplying only two dimensions would be appropriate as a change in the 3rd (whichever dimension remains uncalculated) would potentially affect the power rating.
A good article on transformers and transformer winding including an Excel
calculator for core and copper losses.
Practical Transformer Winding
Another to answer your first question about power for core size.
http://www.ludens.cl/Electron/Magnet.html
calculator for core and copper losses.
Practical Transformer Winding
Another to answer your first question about power for core size.
http://www.ludens.cl/Electron/Magnet.html
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