Re: Turns to secondary length ratio...

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

Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com> 

Looks like I've got about 1200 ft of wire that wont be getting used then.
Luckily #28 is cheap, so I'll nab a small roll off ebay. I guess I could use
the #22 to make some RF chokes.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, January 31, 2004 12:24 PM
Subject: Re: Turns to secondary length ratio...


 > Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
 >
 >
 > Way too big for a good inductance ratio.  #28 or #30 will work better.
 >
 > Dr. Resonance
 >  >
 >  > Ic, so I am guessing #22 gauge is too big for a 3 inch coil?
 >  >
 >  > ---Eric Urban
 >  > ----- Original Message -----
 >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  > To: <tesla-at-pupman-dot-com>
 >  > Sent: Friday, January 30, 2004 1:06 PM
 >  > Subject: Re: Turns to secondary length ratio...
 >  >
 >  >
 >  >  > Original poster: Esondrmn-at-aol-dot-com
 >  >  >
 >  >  > In a message dated 1/29/04 5:28:49 PM Pacific Standard Time,
 >  >  > tesla-at-pupman-dot-com writes:
 >  >  >
 >  >  >
 >  >  > >Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com>
 >  >  > >
 >  >  > >How long should a 3 inch secondary be for 1200 turns?
 >  >  >
 >  >  >
 >  >  > Hydrogen,
 >  >  >
 >  >  > Well, if you wanted say a 5 :1 ratio of winding length to width, you
 > would
 >  >  > need to use a wire that is about .0125 diameter which is
approximately
 > #
 >  >  > 29.5 guage.  So, using # 30 heavy build wire, diameter .0119" would
 > give
 >  > us
 >  >  > a turns per inch of 84.  Assuming a winding density of 95% we get
79.8
 >  >  > turns per inch.  Times 15 inches we would have 1,197 turns.
 >  >  >
 >  >  > Ed Sonderman
 >  >  >
 >  >  >
 >  >  >
 >  >
 >  >
 >  >