Re: calculations

["Tesla list" <tesla@xxxxxxxxxx>]

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

Hi Bart,

H:D ratio of 4 to 5, length 36-40????   Shouldn't this be 16-20 inch 
height for 4 inch diameter coil???

Gerry R.


> Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>
>
> Hi Michael,
>
> 4" diameter would be good. We average a diameter to height ratio of 
> 4 to 5. Thus, your coil length might be 36" to 40". With the 30awg 
> size you suggested, you can expect 1350 turns for the 4:1 h/d to 
> 1700 turns for the 5:1 h/d. If you desire to build somewhere in the 
> neighborhood of 1000 turns, then 26 awg will yield 1100 turns for 
> the 5:1 h/d coil.