[Elecraft] binocular question on W1

Larry Phipps larry at telepostinc.com
Mon Apr 23 12:15:59 EDT 2007


Think of it as two long toroids side by side. The two sides are treated 
as two transformers and wound separately. You count turns the same way, 
ie. a pass through the hole counts as a turn. If you count turns on the 
outside edge, you will count 1 less. A "10 turn" winding will have 9 
turns on the outside and 10 turns on the inside.

Larry N8LP



John Shadle wrote:
> Hi,
> Just picked up my first three Elecraft kits, the W1, W1SERKT, and the 
> DL1. I finished the DL1 this past weekend and just completed the 
> W1SERKT a few minutes ago after doing much of the work on the W1. I 
> stopped working on the W1 when I got to winding the magnet wire on the 
> binocular because I have a question.
>
> For those of you who have built the W1, please offer some 
> clarification for me.
>
> Winding the binocular is just like winding a toroid, no? For example, 
> when I make the first "loop" through one of the binocular holes I have 
> actually put the wire through twice which should count as two of my 
> ten times through the hole.
>
> Just want to make sure I'm counting correctly as I don't want to built 
> the kit twice.
>
> Thanks!
> -john W4PAH
>
> P.S. Can't wait until the custom enclosure is finished up by W8FGU. 
> Thanks also to AG4NN for passing along the PDF of his enclosure as 
> well. Quite impressive.
>
>
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