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Re: Core Material



Subject:      Re: Core Material
       Date:  Sat, 03 May 1997 16:31:11 -0700
       From:  Bert Hickman <bert.hickman-at-aquila-dot-com>
Organization  Stoneridge Engineering
         To:  Tesla List <tesla-at-pupman-dot-com>
 References: 
            1


Tesla List wrote:
> 
> Subject:   Re: Core Material
>   Date:    Fri, 2 May 1997 12:21:13 -0400 (EDT)
>   From:    Esondrmn-at-aol-dot-com
>     To:    tesla-at-pupman-dot-com, tesla-at-poodle.pupman-dot-com
> 
> In a message dated 97-05-01 18:20:51 EDT, tesla-at-pupman-dot-com writes:
> 
> <<
>  Hello Coilers,
> 
>  I am about to start building the secondary of my first (small coil), I
>  have
>  some Acrylic rod and thought of using this for the former.  Being soild
>  I
>  would be able to screw and bolt connections to the former.  I would
>  think
>  losses would go up slightly as opposed to sealed tube construction but
>  not
>  enough to be a problem.  Would there be any other problems using a
> solid
>  plastic core?
> 
>  Also, I was thinking about half wave coils, not many people seem to
>  build
>  these.  Why is this?
> 
>  I look forward to receiving your replies.
> 
> 
>  Rob Davis (UK)
>   >>

Rob, 

How big is the diameter? The main prroblem you'll encounter is getting a
high enough inductance since solid rods tend not to be very big in
diameter. The fact that the material is solid or tubular will have
minimal effect on circuit performance. What coil length and wire gauge
were you planning on using??

-- Bert --