toroidal transformer

[kevinsatterfield]

does anybody know a common place to get toroidal transformers?

[ElectroGasMan]

[ElectroGasMan]

[jjbeamish]

[kumaran]

[chemelec]

[jjbeamish]

[rbdx64]

The present excitation provided is incorporated in the z direction, because the design may be the top-view of the toroidal transformer. The main and supplementary windings are patterned with +z as well as -z direction currents. As it is a short circuit test in a 1:1 transformer, each windings tend to be excited along with same current. Additionally main and secondary windings are patterned without the overlap golf, i.e half side of the primary is primary and the other half aspect is the supplementary. So I wish the excitation given is actually correct as it is the toroid. Please proper me if you feel this isn't the right way.

Actually I attempted the top present denseness technique by modelling arcs rather than Copper winding rings by determining the top currents into it. Even if We simulate that, the permanent magnetic energy worth is very little compared to anticipated and therefore the actual seapage inductance as well. And that i uses our large server which is 96 GB Memory, therefore it solves real quick.

While you said, I am unable to see the arrow plots because current is incorporated in the Z-direction.

Could you predict any other causes of the actual lesser energy value compared to expected. I thank you for help.

[Maddix15]

Can I use an air core toroidal transformer instead of ferrite?
There are no cheap ferrite toroidal cores available to me, what is the down side to just using an air core or some sort of non magnetic core? Is it just efficiency?
I want a 230V input and ~70-0-70 output about 500VA