diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Parts (http://www.diyaudio.com/forums/parts/)
-   -   Unwinding a steel laminate core inductor? Formula? (http://www.diyaudio.com/forums/parts/138812-unwinding-steel-laminate-core-inductor-formula.html)

AudioLapDance 18th February 2009 02:18 AM

Unwinding a steel laminate core inductor? Formula?
 
I have a 15 gauge steel laminate core 10mH inductor that I want to unwind to 6.4mH.

I can't remember where I found this:

"Inductance scales as the number of turns squared.
Count the number of turns across the coil and then from the inner diameter to outer. Multiply these together and you have the number of turns. Call this N1.
L1/L2 = (N1/N2)^2
N1/N2 = sqrt(L1/L2)

N2=N1/sqrt(L1/L2)"

But I think the author wasn't sure if it only applied to air cores.

Will this work for steel cores too?

Thanks,
Jeff

Bill Fuss 18th February 2009 02:27 AM

Hi Jeff,
I don't think it works like that with steel cores. If you have a scope and signal gen you can measure it by making a tuned circuit with a cap of known value. Very accurate also.

Bill


All times are GMT. The time now is 11:07 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2