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#1
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4:1 Balun
Having read Sevic's book I am building the 4:1 Guanella balun on a
SINGLE toroidial core. My question relates to the direction of winding for the two biflar windings that are required. The windings are connected in parallel on the low impedance end and in series on the high impedance end. The text speaks to the need to make connections such that they are series aiding. Do I need to wind one biflar pair in a clockwise direction and the other in a counterclockwise direction to achieve this if I want only parallel connections on one end and series connections on the other? I hope somebody has the book to look at the 4:1 Guanella configuration. |
#2
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4:1 Balun
dykesc wrote in news:f66c9568-793c-4b94-ad1c-
: Having read Sevic's book I am building the 4:1 Guanella balun on a SINGLE toroidial core. My question relates to the direction of winding for the two biflar windings that are required. The windings are connected in parallel on the low impedance end and in series on the high impedance end. The text speaks to the need to make connections such that they are series aiding. Do I need to wind one biflar pair in a clockwise direction and the other in a counterclockwise direction to achieve this if I want only parallel connections on one end and series connections on the other? I hope somebody has the book to look at the 4:1 Guanella configuration. The article at http://www.vk1od.net/balun/gsc/index.htm might help to clarify the terminology, and show you that a 4:1 Guanella balun on a single core will not work properly. Owen |
#3
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4:1 Balun
On May 24, 8:33*pm, Owen Duffy wrote:
The article athttp://www.vk1od.net/balun/gsc/index.htmmight help to clarify the terminology, and show you that a 4:1 Guanella balun on a single core will not work properly. Owen Thanks for quick reply Owen. Guess I took the Sevick single toroid design as authoritative. I will move to a 2 core configuration, which, in my case, is more intuitive to begin with. Also bookmarked your page. Good stuff! Dykes AD5VS |
#4
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4:1 Balun
dykesc wrote in
: On May 24, 8:33*pm, Owen Duffy wrote: The article athttp://www.vk1od.net/balun/gsc/index.htmmight help to clarify the terminology, and show you that a 4:1 Guanella balun on a sing le core will not work properly. Owen Thanks for quick reply Owen. Guess I took the Sevick single toroid design as authoritative. I will move to a 2 core configuration, which, in my case, is more intuitive to begin with. Also bookmarked your page. Good stuff! Dykes, Oh well, lots of people have built them and assert that they "work", but that goes to the meaning of "works" more than anything. I think there are even commercial single core implementations of Guanella's 4:1 balun, but then there is a lot of snake oil in that industry! If you make one on a medium µ core and measure it, it is clear that it doesn't "work" where "work" means that the currents in the output leads are approximately equal but opposite in direction. Owen |
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