Insulation Copper Foil Wire

For a project where I am doing an LLC resonant converter with a máximum input voltage of 120V I would like to wind my ferrite core with 8 layers of 100um copper foil. I would like to know what kind of insulation should I put between the windings because I dont know if Polyester electrical tape is the right choise for this type of winding. 

Maybe I could simply put an isolation sheet in between the copper foils during the winding process, but what kind of foil should I use?


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Don't use electrical tape. Polyester is acceptable if its tempature rating is right. I think the best option for you is Kapton tape.


Published: 6 months ago