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???
07/14/10 16:31
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#177289 - What I would do...
Responding to: ???'s previous message
is to wind primary and secondary on top each other, with adequate insulation in between, and an electrostatic shield (an open loop of thin cooper paper covering all winding width) connected to ground, in the middle of insulation. But details of course deppend on specification, application, etc.

Sometimes, you can see a closed loop of cooper around the transformer. The idea of this is to provide a "trap" for the disperse flux and to reduce the parasite induction in conductors outside the transformer (in audio equipment, for example).

Daniel

List of 13 messages in thread
TopicAuthorDate
(Simple) Isolation transformer            01/01/70 00:00      
   All depends on what you want in terms of specs            01/01/70 00:00      
      Some more inputs            01/01/70 00:00      
         Induction doesn't work with low frequencies or DC            01/01/70 00:00      
   E-cores            01/01/70 00:00      
      U core            01/01/70 00:00      
         What I would do...            01/01/70 00:00      
            Shielding            01/01/70 00:00      
               The use of shield...            01/01/70 00:00      
                  Side-by-side windings exists on E cores            01/01/70 00:00      
   is 4kV enough            01/01/70 00:00      
   Transformer Design            01/01/70 00:00      
   Why 415V to 230V?            01/01/70 00:00      

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