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Electromagnetic and elctrostatic shielding for transformer

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I need to do a 220v-12v 50hz transformer, and it must decouple the ckt from the source line, but I must to use pie winding design to improve the insulation.
Ok my question is, how can I do to implement the Electromagnetic and electrostatic shielding in a pie winding transformer?. I did it in a concentric winding transformer, introducing a copper lamina over the primary and other lamina over secondary. The first one, I connected to earth ground, and the second to the GND Ckts.

Thanks in advance
 

Re: Electromagnetic and elctrostatic shielding for transform

My English is not so good, and I believe that the text posted above
is not well understandable.

Concentric winding means single chamber bobbin, and pie winding means double chamber bobbin.

Thanks to all
PD: recomend me a e-boock or bockk tittle for transformer design.
 

Re: Electromagnetic and elctrostatic shielding for transform

Hi

This link might help you:

/Cl
 

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