Dcappel: sorry i am a littlebite lost with all these formula! can you show me how to understant this site?

 

Start with this design guide and ask any particular questions that you need answered. I cannot guarantee that I will answer your questions personally, but among those who attend AAC frequently, I am confident your questions will be answered. Skip the inductor design section unless you are interested in it and go to the transformer design section. Note that the first chore is to figure out the power handling capacity of your core. As bertus pointed out earlier, the core you described is woefully inadequate for the power levels to which you aspire.

https://www.mag-inc.com/getattachme...PowerDesign-FerriteCatalog2017.pdf?lang=en-US

By the way, the reason many of us shy away from high power power supplies is that they they are expensive to design, including replacing expensive components after mishaps and there is the occasional personal injury from hot and sometimes shooting/exploding bits. Higher power also seems to magnify what might otherwise be insignificant non-idealities such as leakage impedance, skin/eddy current effects and heatsinking. These things aren't a dramatic with small power supply designs.

As with most designs, and particularly those that require detailed design, It is best to know what you want to accomplish before setting out to do it.

 

Hello Dcappels i have calculate the windings and power output of my etd34 with your pdf!:
windings etd34:
np=(12X10°8)/(4X1000X1,2X100000)
np=2,5 turns
ns=330/12X2,5=68T
ns=68 turns
amperage:
ip=60/12=5A
is=60/330=0,2A
for Bmax there was a graphic with values that helped me
if there something wrong, dont forget to explaine me!

 

Hello Dcapells yes your idea is clear but the most important thing on this project is to understand the particularity of a power switching supply! just for me is the pushpull topology to accomplish

 

Do you have a way to test your design?

 

an oscilloscope and multimeter! what do you advice me?

 

My advice is to make it and see how well it works! Transformer designs often need to be adjusted once tested under real conditions. You are well equipped but a current probe would be very handy.

Here is one you can make inexpensively your self:
https://forum.allaboutcircuits.com/threads/project-oscilloscope-ac-current-probe.14911/

 

ok Thank you ill try to do that an apply this project! the frequency margin is wide! ill take you informed!