Re: Square Wire

• To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
• Subject: Re: Square Wire
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Wed, 30 Jul 1997 20:18:44 -0500
• Approved: tesla-at-stic-dot-net

From: 	Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: 	Wednesday, July 30, 1997 3:51 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: Square Wire

Hi Jeff,
           I estimate around 950 turns?

> From:   Jeff W. Parisse[SMTP:jparisse-at-ddlabs-dot-com]
> Sent:   Wednesday, July 30, 1997 12:46 AM
> To:     'Tesla List'
> Subject:    Square Wire
> 
> All,
> 
> I just finished winding a 5" dia. x 20" secondary coil with
> 24ga. SQUARE wire and was interested to find that the
> measured Fsec was 50kHz higher than calculated for
> round wire.

According to my calcs based on estimated turns, L = 25.4mH, C = 9pF
without terminal giving about 330kHz. How do those figures stack up
with yours? What is measured L and f?

> I'm guessing that the increased interturn surface area
> contributed to this observation. Does anyone know the
> technical explanation as to why Fsec would be higher
> with square wire?

Possibly fewer turns because of thicker insulation (total shot in the 
dark).

?
Malcolm

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