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Re: mathematics
From: DamDeName-at-aol-dot-com[SMTP:DamDeName-at-aol-dot-com]
Sent: Sunday, September 07, 1997 3:10 AM
To: tesla-at-pupman-dot-com
Subject: Re: mathematics
Hi Kevin,
One handy-dandy formula for single layer coils is :
L= (N x A)^2 / 9A + 10B
where: L is inductance in microheneries
N is the number of turns
A is the mean radius of the coil in inches
B is the length of the coil in inches
The above formula ---- re-arranged as follows --- will determine the
number of turns for a given inductance--------------
N = the square root of L(9A + 10B )/A
According to the scuttlebutt the above are accurate to 1%
Have fun ,
Sandy
In a message dated 97-09-06 01:24:18 EDT, you write:
<< Now that I have a functioning coil, I would like to begin to read in on
the theory and especially the mathematics. Is there a single good book
that can help me, or maybe a few? I tried the library but found nothing
about coils. I am probably going to try the local university next.
Also, would anyone happen to know a formula for calculating the
inductance of a choke, taking into account the form shape and size, the
wire gauge, and the number of turns?
thanks,
kevin >>