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In Reply to: Re: Thanks for the explanation, Dave. posted by Dave Cigna on February 12, 2006 at 05:10:23:
Now I got your point. I did not mean Lundahl takes two secondaries apart on the core, which of course he does not. I only meant that split bobbin with identical windings makes things more symmetrical than when all windings are placed on the same bobbin.BTW, separated windings aren't as bad as you suggest if the core has high perm and windings are very close to the core, preferably in just one layer.
As to the big core IT, you indeed need less turns for the same inductance, however the length of wire (which is equivalent to winding capacitance) will not change. Stray inductance is also unlikely to improve because at low core permeability this parameter is more dependent on winding diameter than on proximity of winding to the core. It is a textbook knowledge that coupling in gapped transformers is poor, and nothing can be done to improve it other than decreasing the gap.
Regards,
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Follow Ups
- I don't think you get away with bigger core for IT. - sser2 17:59:32 02/12/06 (2)
- Re: I don't think you get away with bigger core for IT. - Dave Cigna 12:54:38 02/14/06 (1)
- Re: I don't think you get away with bigger core for IT. - dave slagle 18:39:11 02/15/06 (0)
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