Re: [OT] "Backward" Baluns
Posted by
Alexey Kats on
Aug 07, 2010; 9:53am
URL: http://elecraft.85.s1.nabble.com/OT-Backward-Baluns-tp5382873p5383315.html
Ouch, right, I was mostly thinking about QRP. On high power one has to
start keeping track of what current each side of a balun was supposed
to handle as well. Sorry for missing that.
On Sat, Aug 7, 2010 at 2:49 AM, Guy Olinger K2AV <
[hidden email]> wrote:
> It depends on what "balun" design you are talking about. Some 50:200
> baluns take a pair of 100 ohm feedlines wound on ferrite toroids to
> choke off common mode current, connect them in parallel on the 50 ohm
> side, and in series on the 200 ohm side. This design will not do
> 50:12.5. Others will not work well because the 50:200 assumes the
> lower current on the 200 side at QRO, and a different design 50:12.5
> is specifically wound with QRO high current of 12.5 in mind.
--
Alexey Kats (neko)
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