TSSP: List Archives

From: "Terrell W. Fritz"
Date: Sat, 30 Dec 2000 19:31:58 -0700
Subject: [TSSP] Re:NSVPI - Latter Results

Hi Paul,

	As part of trying to track down why the inductance of my coil reads a
little lower than calculations.  I did some more measurements of interest here.

I counted the number of turns on the coil by blowing up high-res digital
pictures along its length and counting the turns of each section with the
mouse cursor (really fast and easy).

The coil has 1000.6 turns  instead of 1000.5 ;-))
the length is really 30.19 instead of 30.0
The most accurate inductance I can measure is 75.58mH

Here are the turns per section:
0	7.6 **
1	33
2	33
3	34
4	33
5	34
6	32
7	35
8	32
9	34
10	33
11	33
12	33
13	33
14	33
15	34
16	34
17	32
18	33
19	33
20	33
21	33
22	34
23	33
24	33
25	34
26	33
27	33
28	33
29	34
30	29

**There is a small uncounted section (Gore votes ;-)) at the base!  I
marked it off in inches but the extra section didn't "fit" the scratches
and I forgot about it. :-o

The inductance of 75.58 is still low compared to acmi's 76.1 and 75.986 but
does agree with Wheeler's formula of 75.56mH.

The science goes on...

Cheers,

	Terry


Maintainer Paul Nicholson, paul@abelian.demon.co.uk.