Coils
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KnightLore



Joined: 14 Jul 2006
Posts: 4
Posted: Fri Jul 14, 2006 5:48 pm    Post subject: Coils Reply with quote
Hi!! I have some circuits with a coil of 1uH or 100uH. Where I live nobody sells coils, and I will to make one myself. I have a enamelled wire of 30swg, there is a way to calculate the diameter, turns and so on based in the uH needed?

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neon



Joined: 25 Feb 2006
Posts: 570
Posted: Mon Jul 17, 2006 11:39 am    Post subject: Reply with quote
to withing 1% use L=n square x r square/9r+10l enght
L=Uh
r=d/2
d=diameter
n=number of turns
l=lenght
good luck
low freq L=F n square d
F=FORM FACTOR d/l
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