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Re: Info on building secondary



Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

Hi Mike,

I used an acrylic form and an acrylic bulkhead. Scrap acrylic sheets are fairly cheap. Lot depends on what you use for a form. Sona tube may defeat some of the benifit from an acrylic bulkhead for example.

Gerry R.

Original poster: "Mike Knowlton" <amdx@xxxxxxxxxxx>




> Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>

> Sec should start 3 inches up on the lower end to insure proper coupling.

  Is this assuming a V shaped primary?

> Use two disks inside about 3.5 inches down from the >upper end and 5
inches in from the lower end.

 I'd like to find an inexpensive material for these insulative plates (and
end caps). Would  varnished particle board be as good as anything?
                                    Mike

> Dr. Resonance
>
>
>  >
>  > I'm about to start winding a secondary.
>  >   I have an 8.5" x 42" form.
>  >
>  > Question 1.  Should I start and stop two inches from the ends?
>  > (letting the last turn coil in a wide spaced turn to the top)
>  >
>  > Question 2.  Should I put insulating plexiglas plates inside the tube
>  > several inches from each end plate?
>  > ( how many inches?)
>  >
>  >       Thanks
>  >             Mike
>  >
>  >
>  >
>
>
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>