Matching Transformer PDF's
On Sep 6, 4:54*am, dxAce wrote:
*http://www.dxing.info/equipment/impe...ing_bryant.pdf Here I think is the original article by John Bryant which appeared back in the late 80's in Fine Tuning Proceedings (though this one is dated 2001): *http://home.comcast.net/~markwa1ion/...ansformers.pdf Used here for over 25 years. dxAce Michigan USA What I like best about these two articles "side-by-side" is that the later article shows why an evenly and fully wound core is superior to the partially wound core with the windings separate - due to loss of field intersect when the core is not fully covered. Love this, thanks ~ Bruce |
Matching Transformer PDF's
On Sep 7, 10:45*am, bpnjensen wrote:
On Sep 6, 4:54*am, dxAce wrote: *http://www.dxing.info/equipment/impe...ing_bryant.pdf Here I think is the original article by John Bryant which appeared back in the late 80's in Fine Tuning Proceedings (though this one is dated 2001): *http://home.comcast.net/~markwa1ion/...ansformers.pdf Used here for over 25 years. dxAce Michigan USA What I like best about these two articles "side-by-side" is that the later article shows why an evenly and fully wound core is superior to the partially wound core with the windings separate - due to loss of field intersect when the core is not fully covered. *Love this, thanks ~ Bruce BpnJ, Note - A1 & A2 are the same point on a Ferrite Toroidal Core {Donut} http://www.goldmine-elec-products.com/images/G6683B.jpg # 1 Two Separate and Opposed Coils A1=====================A2 Ferrite .......mmmmmm..........mm........ ----------- 30T ------------- 10T -------- http://www.automatic-windings.co.uk/...mages/1239.jpg -or- # 2 Two Coils Spread-Out Evenly Around the Core First the Larger Coil with many turns : Then the smaller coil with fewer turns laid over the first. A1=====================A2 Ferrite .......m....m....m....m....m....m... = 30T ............n......n......n......n.......... = 10T http://t1.gstatic.com/images?q=tbn:3.../coil1.jpg&t=1 -wrt- # 2 the 'Techie-Think' on this is : 1st the Coils themselves Couple better. 2nd the entire Surface and Mass of the Ferrite Core {it's Magnetic Properties} is more effective used to Couple the Two Coils. Result : Coupling Synergy is Achieved 1st (1) &(+) 2nd (1) = 4 ~T~ Mucho Better ! of course there are the exceptions to every good idea :o) ~ RHF http://www.overunity.com/index.php?a... 45161%3Bimage |
All times are GMT +1. The time now is 03:05 PM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
RadioBanter.com