Secondary Side Trace Inductances and Their Impact on Efficiency

Secondary Side Trace Inductances and Their Impact on Efficiency 

Many years ago, after having developed some initial confidence making my very first 70W Flyback in Bombay, I thought to myself, why can t I go all the way Why can t I, say, make a 600W Flyback It is like if you don t know about the existence of gravity, you can fly. So I did make that 600W Flyback, and also later wondered what the fuss was all about. 

You can argue— but 20nH per inch is just a rule of thumb How can we even confirm what the effective leakage inductance really increases on the primary side (as a result of that)  

Finally, after all their internal checks and balance (the company was indeed fastidious in matters of product liability), they agreed they had gotten to understand the Flyback topology far better now. So I quickly incorporated the new loss term into the Mathcad and Excel 

Where can we find thick copper braids Well, I tend to use regular solder wick lying around the lab. I am fairly convinced by now that if I partially soak some solder into it, it works great as a high-frequency shunt. I won t be caught ordering Litz wire just yet. 

---