Inductive ovens operate at low frequencies, 100kHz and less usually. That is to
get a greater skin depth.
Due to skin effect, if you are operating in the MHz range most of the current
will be thru the plateing not the core material.
Most plateings have high resistivity and are thick as well and some have two
layers to allow a good bond between the
final plate and the core material.
73
Bill wa4lav
________________________________________
From: amps-bounces@contesting.com [amps-bounces@contesting.com] On Behalf Of
DJ7WW [dj7ww@t-online.de]
Sent: Friday, November 19, 2010 5:56 AM
To: amps@contesting.com
Subject: Re: [Amps] Plated screws
You will find out quickly if you use them to connect copper straps to coils
or band switches or elsewhere in rf fields.
In inductive ovens the same "eddy current" works quite effective
73
Peter
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of n8de@thepoint.net
Sent: Freitag, 19. November 2010 06:15
To: Stirling Schmidt
Cc: AMPS submit
Subject: Re: [Amps] Plated screws
Please explain WHY magnetic screws are 'inappropriate' for amp building?
73
Don
N8DE
Quoting Stirling Schmidt <kc0nxm@sbcglobal.net>:
> Hi all:
> Where's a good place to source nickel-plated brass screws? I have
> some from ages
> ago, but I'm assuming the hardware store zinc-steel variety are
inappropriate
> for amp assembly, as they are magnetic.
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
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