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Inductance of Multilayer Solenoid 
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#1
Aug1514, 01:21 AM

P: 84

I've been looking for a good formula to calculate the inductance of a multilayer solenoid within about 10% accuracy or greater. I've used several formulas derived from Wheeler's formula, as well as a few online calculators, however, my results seem to differ wildly depending on what formula or calculator I use. I'm wondering if anyone has a formula or calculator for multilayer coils consisting of only a few layers that they've found works well. If it helps the wire is .225 millimeters in diameter, the coils are less than 2 cm long with maybe 2 or three layers, and the diameter of the tubing is 5 millimeters.
Thanks! 


#2
Aug1514, 01:35 AM

P: 778

A couple of years ago you asked about Nagaoka's coefficient, and I directed you to David Knight's web site.
You can find a lot of inductance formulas in this document on his site: http://www.g3ynh.info/zdocs/refs/NBS/Sci169noerr.pdf You should buy a copy of this classic book which has tables and formulas for many cases: http://www.amazon.com/InductanceCal...las+and+tables 


#3
Aug1514, 03:57 AM

Sci Advisor
Thanks
P: 1,955

Until those three parameters are specified it will be impossible to answer the question. Get a copy of that book. It is essential and cheap new, with free postage. US$15. http://www.bookdepository.com/Induct...ctCurrency=AUD 


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