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...snip...
The first tests:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xlsx
...snip....
On Thu, 05 Mar 2015 01:56:27 -0700, Klaus Kragelund
klauskvik@hotmail.com> wrote:
...snip...
The first tests:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xlsx
...snip....
bad link. did you put the whole line inside <>?
On Thursday, March 5, 2015 at 11:43:32 AM UTC+1, Robert Macy wrote:
On Thu, 05 Mar 2015 01:56:27 -0700, Klaus Kragelund
klauskvik@hotmail.com> wrote:
...snip...
The first tests:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xlsx
...snip....
bad link. did you put the whole line inside <>?
Old excel format:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xls
Cheers
Klaus
On 5.3.15 13:57, Klaus Kragelund wrote:
On Thursday, March 5, 2015 at 11:43:32 AM UTC+1, Robert Macy wrote:
On Thu, 05 Mar 2015 01:56:27 -0700, Klaus Kragelund
klauskvik@hotmail.com> wrote:
...snip...
The first tests:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xlsx
...snip....
bad link. did you put the whole line inside <>?
Old excel format:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xls
Cheers
Klaus
Klaus,
Please do it next time with angle brackets:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xls
On Thursday, March 5, 2015 at 11:43:32 AM UTC+1, Robert Macy wrote:
On Thu, 05 Mar 2015 01:56:27 -0700, Klaus Kragelund
klauskvik@hotmail.com> wrote:
...snip...
The first tests:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xlsx
...snip....
bad link. did you put the whole line inside <>?
Old excel format:
http://www.electronicsdesign.dk/tmp/SDR0503_331uH test.xls
Cheers
Klaus
...snip...
Maybe it's a high perm core?
I will measure what you asked for and post back
Cheers
Klaus
On Thu, 05 Mar 2015 04:59:03 -0700, Klaus Kragelund
klauskvik@hotmail.com> wrote:
...snip...
Maybe it's a high perm core?
I will measure what you asked for and post back
Cheers
Klaus
Forgot to ask for turns count on top layer. I didn't try infinite perm,
perhaps I should. But I started with perm of 200 and got around 320uH then
went to perm of 2000 and then the inductance only went up to 350uH.
Remember from air core to perm core is only 5.4 on the SDR0403-4R7 An open
core 'rod's effective permeability is based upon the length dieamter ratio
NOT the perm.
Last page of Fairite catalog, circa 70's shows an excellent plot of
effective perrm vs length to diameter ratios AND permeability. The curves
asymptotically limit to a function of length to diameter, independent of
high perm.
Anybody have a copy of that page? I can't find mine! not long ago I think
someone posted it here, I got a copy, and can't find where I put it!! Just
because I did not name it correctly. Or, put it in the right folder.
...snip....
I searched a while and found it in the 13th edition, page 24:
http://www.phenix.bnl.gov/phenix/WWW/muon/muid_fee/whitus/data_sheets/frcat13.pdf
On Thu, 05 Mar 2015 16:24:04 -0700, Klaus Kragelund
klauskvik@hotmail.com> wrote:
...snip....
I searched a while and found it in the 13th edition, page 24:
http://www.phenix.bnl.gov/phenix/WWW/muon/muid_fee/whitus/data_sheets/frcat13.pdf
Thanks for posting! ...but that's not the page, although has the
information.