Re: calculating copper plate indutance (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 26 Sep 2007 20:35:30 -0600 (MDT)
From: Chip Atkinson <chip@xxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: calculating copper plate indutance (fwd)

I just checked the headers returned adn it doesn't look like it's a
caching proxy issue on the server end.

Chip

On Wed, 26 Sep 2007, Tesla list wrote:

> 
> ---------- Forwarded message ----------
> Date: Wed, 26 Sep 2007 19:24:09 -0700
> From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: calculating copper plate indutance (fwd)
> 
> Hi Chris,
> 
> I'm sending you a zip following this email. I have noticed this problem 
> in the past in all the script type programs. It is certainly a browser 
> thing. I've noticed it when deleting files or over-writing them. The 
> only way to get around it is renaming files like with a rev character as 
> part of the name. Fine for scripts, but not the page itself.
> 
> So, anyway, expect the zip file soon.
> 
> Take care,
> Bart
> 
> Tesla list wrote:
> 
> >---------- Forwarded message ----------
> >Date: Wed, 26 Sep 2007 16:18:13 +0100
> >From: Chris Swinson <list@xxxxxxxxxxxxxxxxxxxxxxxxx>
> >To: Tesla list <tesla@xxxxxxxxxx>
> >Subject: Re: calculating copper plate indutance (fwd)
> >
> >HI Bart,
> >
> >The cache is totally clear, when I visit your page it comes up with all the 
> >related files, I clear the cache again, and refresh the page and still only 
> >obtains the old files.
> >
> >I got a mate of mine to check, he sent me the JS and HTML pages, so I can 
> >see the new page that way. If you could zip the new ones then I can bung it 
> >on my webpage and use it from there.
> >
> >I tried the page again today, still the same, I have never seen anything 
> >like this before. The only thing I could suggest if you delete the related 
> >pages on your site, then reupload them (not just overwrite). I've had 
> >websites go a bit strange at times in not updating files. Though why it 
> >would only effect my pc I have no idea.
> >
> >All your site files are re-downloaded each visit, and I only get the old 
> >files, so *SHRUGS* Really do not understand this one..
> >
> >Strange thing is, I get your updated JAVATC pages fine!
> >
> >cheers,
> >Chris
> >
> >
> >
> >----- Original Message ----- 
> >From: "Tesla list" <tesla@xxxxxxxxxx>
> >To: <tesla@xxxxxxxxxx>
> >Sent: Wednesday, September 26, 2007 2:54 PM
> >Subject: Re: calculating copper plate indutance (fwd)
> >
> >
> >  
> >
> >>---------- Forwarded message ----------
> >>Date: Tue, 25 Sep 2007 18:05:53 -0700
> >>From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
> >>To: Tesla list <tesla@xxxxxxxxxx>
> >>Subject: Re: calculating copper plate indutance (fwd)
> >>
> >>Hi Chris,
> >>
> >>Man, that is odd. No, just one server for classictesla. Classictesla is
> >>on the Nebula server of LunarPages. I don't test with Opera. I tried it
> >>early in Opera's infancy but didn't like how the document objects were
> >>handled as far as passing data to and from.
> >>
> >>You may want to give Firefox a try. Firefox has come a long way these
> >>days and I use it almost exclusively now. I'm curious if you cleared the
> >>cache in IE6 while still on the flat ribbon calc page? If so, that might
> >>explain it as it will at least have to store the page that is open
> >>regardless. If your seeing no ohms box, then you are looking at a web
> >>page that is no longer on the server, so it must be cached on your pc as
> >>that's the only way you would be able to even bring it up.
> >>
> >>There should be 4 output boxes. The bottom is labeled "Winding
> >>Resitance" and it's unit is the Omega symbol with "m" in front of the
> >>symbol for milliohms (just in the event your still looking for the word
> >>"ohm").
> >>
> >>If you can't figure out the problem, let me know and I'll just send you
> >>the files offline.
> >>
> >>Take care,
> >>Bart
> >>
> >>Tesla list wrote:
> >>
> >>    
> >>
> >>>---------- Forwarded message ----------
> >>>Date: Tue, 25 Sep 2007 11:07:22 +0100
> >>>From: Chris Swinson <list@xxxxxxxxxxxxxxxxxxxxxxxxx>
> >>>To: Tesla list <tesla@xxxxxxxxxx>
> >>>Subject: Re: calculating copper plate indutance (fwd)
> >>>
> >>>Hi Bart,
> >>>
> >>>I asked a mate of mine to try it and he says it works, I've tried IE6, IE7
> >>>and even tried opera, and still no ohms box.
> >>>
> >>>I've deleted the IE cache clean, I've never visisted classictesla in opera
> >>>so everything is new in there. Still, this one has got me stumpted.
> >>>
> >>>Looking at the HTML code, there is no box there for the ohms bit, looking 
> >>>at
> >>>the JS file, nothing in there either.
> >>>
> >>>I wonder if your website is held on a few servers or something, and the
> >>>server I happen to be trying has not caught up yet ? the only thing I can
> >>>think of :S
> >>>
> >>>Chris
> >>>
> >>>
> >>>
> >>>
> >>>----- Original Message ----- 
> >>>From: "Tesla list" <tesla@xxxxxxxxxx>
> >>>To: <tesla@xxxxxxxxxx>
> >>>Sent: Tuesday, September 25, 2007 2:35 AM
> >>>Subject: Re: calculating copper plate indutance (fwd)
> >>>
> >>>
> >>>
> >>>
> >>>      
> >>>
> >>>>---------- Forwarded message ----------
> >>>>Date: Mon, 24 Sep 2007 17:48:28 -0700
> >>>>From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
> >>>>To: Tesla list <tesla@xxxxxxxxxx>
> >>>>Subject: Re: calculating copper plate indutance (fwd)
> >>>>
> >>>>Hi Chris,
> >>>>
> >>>>It's working just fine for me. I think your browser is using the old
> >>>>cache script. Hold the shift key down and click on Reload in your
> >>>>browser after the page comes up. This should clear the cache and reload
> >>>>the new script. If still nothing, then go to your browser preferences
> >>>>and clear the cache and stored web pages there.
> >>>>
> >>>>I've checked it in both IE6 and Firefox and both work fine. BTW, the
> >>>>value is milliohms.
> >>>>
> >>>>This is something that occurs with the other javascript pages as well.
> >>>>There is a way to get rid of it (applying a rev to the script name), but
> >>>>I've yet to implement that. I might do that on the next go around. BTW,
> >>>>Netzero and similar dialup utilities are horrible for storing old stuff
> >>>>and not loading the new stuff.
> >>>>
> >>>>Take care,
> >>>>Bart
> >>>>
> >>>>Tesla list wrote:
> >>>>
> >>>>
> >>>>
> >>>>        
> >>>>
> >>>>>---------- Forwarded message ----------
> >>>>>Date: Sun, 23 Sep 2007 19:24:42 +0100
> >>>>>From: Chris Swinson <list@xxxxxxxxxxxxxxxxxxxxxxxxx>
> >>>>>To: Tesla list <tesla@xxxxxxxxxx>
> >>>>>Subject: Re: calculating copper plate indutance (fwd)
> >>>>>
> >>>>>Hi Bart,
> >>>>>
> >>>>>No, there is nothing in the box whatsoever not even a zero. I did try 
> >>>>>100
> >>>>>turns and still nothing.
> >>>>>
> >>>>>The resistances are less than 10 milliohms I would imagine. I am only
> >>>>>using
> >>>>>a single turn of thick sheet so it should work out like 1 milliohm..
> >>>>>
> >>>>>Cheers,
> >>>>>Chris
> >>>>>
> >>>>>
> >>>>>
> >>>>>----- Original Message ----- 
> >>>>>From: "Tesla list" <tesla@xxxxxxxxxx>
> >>>>>To: <tesla@xxxxxxxxxx>
> >>>>>Sent: Sunday, September 23, 2007 7:03 PM
> >>>>>Subject: Re: calculating copper plate indutance (fwd)
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>          
> >>>>>
> >>>>>>---------- Forwarded message ----------
> >>>>>>Date: Sun, 23 Sep 2007 10:40:01 -0700
> >>>>>>From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
> >>>>>>To: Tesla list <tesla@xxxxxxxxxx>
> >>>>>>Subject: Re: calculating copper plate indutance (fwd)
> >>>>>>
> >>>>>>Hi Chris,
> >>>>>>
> >>>>>>Let me guess; you are seeing 0 in the resistance box? Ok, this is
> >>>>>>exactly why I said more precision past 3 decimal places. Just change
> >>>>>>your turns to like 100 and see what happens.
> >>>>>>
> >>>>>>I can always change the output to milliohms as this might make more
> >>>>>>sense for flat ribbon primary's. I should have done that from the 
> >>>>>>start.
> >>>>>>Ok, I'm off to do that. Should only take me a couple minutes.
> >>>>>>
> >>>>>>Take care,
> >>>>>>Bart
> >>>>>>
> >>>>>>Tesla list wrote:
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>            
> >>>>>>
> >>>>>>>---------- Forwarded message ----------
> >>>>>>>Date: Sun, 23 Sep 2007 16:01:09 +0100
> >>>>>>>From: Chris Swinson <list@xxxxxxxxxxxxxxxxxxxxxxxxx>
> >>>>>>>To: Tesla list <tesla@xxxxxxxxxx>
> >>>>>>>Subject: Re: calculating copper plate indutance (fwd)
> >>>>>>>
> >>>>>>>Hi Bart,
> >>>>>>>
> >>>>>>>Thanks for taking the time to add it in!
> >>>>>>>
> >>>>>>>I can't get anything to come up in the resistance box though ?
> >>>>>>>
> >>>>>>>Cheers,
> >>>>>>>Chris
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>              
> >>>>>>>
> >>>>>>>>Hi Chris,
> >>>>>>>>
> >>>>>>>>I added copper ribbon resistance to the output as requested.
> >>>>>>>>http://www.classictesla.com/java/flatribbon/flatribbon.html
> >>>>>>>>
> >>>>>>>>I've got it set to 3 decimal places. If your looking for more 
> >>>>>>>>precision
> >>>>>>>>for small turns, you can always calculate it.
> >>>>>>>>R=pL/A where p is resistivity of material, L is the length, and A is
> >>>>>>>>the
> >>>>>>>>cross sectional area.
> >>>>>>>>
> >>>>>>>>So, A = thickness x height
> >>>>>>>>L = Length of winding
> >>>>>>>>p = 0.000001678 ohms/cm (the number I'm using anyway)
> >>>>>>>>
> >>>>>>>>The resistivity of copper varies. This is part of the problem with
> >>>>>>>>resistance numbers. There are a lot of copper alloys and even 
> >>>>>>>>processes
> >>>>>>>>can change affect resistivity. Temperature is also a large factor. 
> >>>>>>>>The
> >>>>>>>>output value will assume a temp of 20C (68F) and the common 
> >>>>>>>>resistivity
> >>>>>>>>number shown above.
> >>>>>>>>
> >>>>>>>>Take care,
> >>>>>>>>Bart
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>                
> >>>>>>>>
> >>>>>>>>>Would it be possible to mash the resistance calculation into that 
> >>>>>>>>>too
> >>>>>>>>>,
> >>>>>>>>>pretty pleaseeee ;o)
> >>>>>>>>>
> >>>>>>>>>Chris
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>                  
> >>>>>>>>>
> >>>>>>>>
> >>>>>>>>                
> >>>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>              
> >>>>>>>
> >>>>>>            
> >>>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>          
> >>>>>
> >>>>        
> >>>>
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> >>>      
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