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Re: Primary/NST case coupling effects
- To: tesla@pupman.com
- Subject: Re: Primary/NST case coupling effects
- From: "Tesla list" <tesla@pupman.com>
- Date: Thu, 20 Nov 2003 20:24:45 -0700
- In-Reply-To: <B9B8E488E3C5D5118353006097A4B4B1147D62@NTSERVER>
- References: <B9B8E488E3C5D5118353006097A4B4B1147D62@NTSERVER>
- Resent-Date: Thu, 20 Nov 2003 20:46:05 -0700
- Resent-From: tesla@pupman.com
- Resent-Message-ID: <2yNCt.A.N7F.6pYv_@poodle>
- Resent-Sender: tesla-request@pupman.com
Original poster: Terry Fritz <teslalist@twfpowerelectronics.com>
Hi,
At 05:15 PM 11/19/2003, you wrote:
>Does situating the earthed metallic case of a large NST below the primary of
>a TC have much of an effect on:
>
>1) Changing the resonant frequency of the primary
Large metal objects can affect the primary frequency. But the frequency is
not super critical. Easy to tune out...
>2) Changing the coupling
Large metal objects can distort the magnetic fields. But coupling is not
critical. You will not notice...
>3) Inducing eddy currents into the NST case
You bet!! It depends on how close you get, but Eddy currents and case
heating could start to rob the coil of power!
>4) Inducing RF into the NST windings?
Nope, the case shields the internals of the NST...
Worry about #3....
Cheers,
Terry
>Just wondering.
>
>Tom L.