Re: big secondaries

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Daniel Barrett by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dbarrett1-at-austin.rr-dot-com>

    I tried it and had poor results, but this was done before I understood
aspect ratios- My coil was 4' long by 4" diameter, so the wire way have had
little effect. Still, seems like thick PVC insulation would be inferior to
thin enamel...
db


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, September 10, 2002 6:27 PM
Subject: big secondaries


> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>
>
>
> Looking at practical spacewound secondaries that are big... looking for
> Fres around 100 kHz
>
> What about winding an 18" form 60" long (3.33:1 aspect) with AWG12 THHN
> wire... about 2300 ft, 28 mH  Looks like you can get 8.3 turns/inch (if
you
> go to 8tpi, you get 25.8 mH, and fres goes up to 110 kHz) (assuming 52 pF
> topload)
>
> A 12.5 inch diameter form, 5 feet long (4.8:1) would be 159 kHz (12.9 mH)
> at 8tpi
>
> Has anyone ever wound with standard house wire?
>
>
>