Re: Primary inductance

• To: tesla-at-poodle.pupman-dot-com
• Subject: Re: Primary inductance
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Thu, 08 May 1997 01:16:06 -0500
• Approved: tesla-at-stic-dot-net

Subject:        Re: Primary inductance
       Date:    Wed, 07 May 1997 19:30:45 -0700
       From:     Bert Hickman <bert.hickman-at-aquila-dot-com>
Organization:    Stoneridge Engineering
         To:    Tesla List <tesla-at-pupman-dot-com>
 References: 
            1


Tesla List wrote:
> 
> Subject:   Primary inductance
>   Date:    Mon, 5 May 1997 19:33:33 -0400 (EDT)
>   From:    ADatesman-at-aol-dot-com
>     To:    tesla-at-pupman-dot-com
> 
> I'm having some difficulty measuring the inductance of my primary coil -
> I
> think because of old and crotchety test equipment, but maybe it's just
> stupidity.  At any rate, I'm wondering - I have 13 turns of 1/4" copper
> tubing on a 30 degree bank, spreading out from 6 inches to about 25
> inches.
>  Does anybody with a similarly-sized primary know its inductance?  (I am
> just
> trying to get a benchmark, to see where the problem might lie.)
> Thanks!!
>    Aaron Datesman

Aaron,

Don't have such a coil handy on my system, but my spreadsheet says you
ought to be seeing about 67 uH (total)at turn 13. Sounds like you're
using pretty wide turn-turn spacing...

-- Bert H --

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