To understand what is going on here you have to know what skin effect is.
http://en.wikipedia.org/wiki/Skin_effect
Litz wire.
http://en.wikipedia.org/wiki/Litz_wire
and understand proximity effect.
http://en.wikipedia.org/wiki/Proximity_effect_(electromagnetism)
The main reason your transformer does not work is because of proximity effect. If you look at the proximity effect article. In the middle it talks about an RAC RDC ratio. As a general rule you should not exceed an RAC RDC of 1.5. You have a whopping ratio of 30.
The litz wire article tells you why home made litz wire will not work and the skin effect is something that interacts with the litz wire and proximity effect. All in all this is a very complex interaction and it takes a long time to understand.
The trick is to design out all of these bad variables and the answer is given every day, but not many people really know it comes from those 3 articles or how important it is to follow the advice. The ideal transformer is a split primary with the secondary in the middle. Both the primary and the secondary should be a single layer if possible and all winding’s should fill the entire winding width of the core, except for safety insulation on the ends of the bobbin, something you do not have to worry about at the voltages you are working with.
I think from here i should go in to transformer design. The above is standalone information so i will post this to break up this long post.
http://en.wikipedia.org/wiki/Skin_effect
Litz wire.
http://en.wikipedia.org/wiki/Litz_wire
and understand proximity effect.
http://en.wikipedia.org/wiki/Proximity_effect_(electromagnetism)
The main reason your transformer does not work is because of proximity effect. If you look at the proximity effect article. In the middle it talks about an RAC RDC ratio. As a general rule you should not exceed an RAC RDC of 1.5. You have a whopping ratio of 30.
The litz wire article tells you why home made litz wire will not work and the skin effect is something that interacts with the litz wire and proximity effect. All in all this is a very complex interaction and it takes a long time to understand.
The trick is to design out all of these bad variables and the answer is given every day, but not many people really know it comes from those 3 articles or how important it is to follow the advice. The ideal transformer is a split primary with the secondary in the middle. Both the primary and the secondary should be a single layer if possible and all winding’s should fill the entire winding width of the core, except for safety insulation on the ends of the bobbin, something you do not have to worry about at the voltages you are working with.
I think from here i should go in to transformer design. The above is standalone information so i will post this to break up this long post.