[Prev][Next][Index][Thread]
Re: mathematics
From: Kevin[SMTP:wawa-at-spectra-dot-net]
Reply To: wawa-at-spectra-dot-net
Sent: Sunday, September 07, 1997 8:13 PM
To: Tesla List
Subject: Re: mathematics
Tesla List wrote:
>
> 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
>
When people are giving the inductance of their chokes as 6mH, does the
'm' mean mili or micro? I assumed it stands for mili, but I don't think
you can reproduce the symbol for micro with the keyboard.
thanks
Kevin