COIL LENGTH?

• To: "'Tesla List'" <tesla-at-pupman-dot-com>
• Subject: COIL LENGTH?
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Sun, 1 Feb 1998 14:59:30 -0600
• Approved: tesla-at-stic-dot-net

----------
From:  richard hull [SMTP:rhull-at-richmond.infi-dot-net]
Sent:  Friday, January 23, 1998 6:32 AM
To:  Tesla List
Subject:  Re: COIL LENGTH?

At 07:14 AM 1/23/98 -0600, you wrote:
>
>----------
>From:  Zuma [SMTP:mwise-at-ns.sosis-dot-com]
>Sent:  Friday, January 23, 1998 12:46 AM
>To:  tesla-at-pupman-dot-com
>Subject:  COIL LENGTH?
>
>I would like some input on this. I have recently wound a new secondary
>with 22awg magnet wire on a 6.25" x 19" coil form. My question is, is
>it better to keep the w/h ratio closer to a 3:1 or is it better to go 
>with a larger ratio of say 5:1. The 5:1 gives a lower frequency and more
>inductance, so I am just wondering. The only thing I observed dropping,
>was as the tube get longer the Q was dropping. This was all done in
>teslac.
>
>Thanks 
>Chris
>
>
>Chris,

Forget Teslac and do your own thing!  That ratio sounds about right. The
longer L/D ratios are for really small coils under 3" in diameter. I would
normally wind such a tube with 24 gauge wire to get at those lower freqs.
But again, do your own thing.

Richard Hull, TCBOR

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