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Re: Strike object and "Terry Filter"
- To: tesla@pupman.com
- Subject: Re: Strike object and "Terry Filter"
- From: "Tesla list" <tesla@pupman.com>
- Date: Tue, 03 Jun 2003 13:07:15 -0600
- In-Reply-To: <5.1.0.14.0.20030602220822.00b1c1c0@email.uc.edu>
- Resent-Date: Tue, 3 Jun 2003 13:08:55 -0600
- Resent-From: tesla@pupman.com
- Resent-Message-ID: <Os9d8B.A.80F.OIP3-@poodle>
- Resent-Sender: tesla-request@pupman.com
Original poster: "Terry Fritz" <teslalist@qwest.net>
Hi Jeremy,
At 10:33 PM 6/2/2003 -0400, you wrote:
>Group,
> Just had a couple of quick questions. The first question
> is: when constructing a strike object, should it be tied to RF ground,
> or should it be connected to a separate ground rod in earth?
Either RF type ground is good. Just not the AC ground. A separate RF
ground just for the strike rod would be really nice, but not really needed.
>My second question is regarding the "Terry filter". What are the purpose
>of the MOV's in the circuit? Is it just a safe guard in case a capacitor
>shorts out? Will leaving them out make much of difference
>functionally? Just thought I would check before making a Digi-key
>purchase! Thanks everyone in advance!
"Theoretically", the MOVs do not do anything. The safety gaps "should" do
all the work. Until someone set the safety gaps wrong or a streamer hits
the circuit or... The MOVs are really just a last rock solid defense
against the NST burning out. MOVs are sort of costly and they do
occasionally fail too. But they do provide a secondary wall of defense
against NST damage. My NSTs are pretty valuable to me so I will do
anything to protect them. If one has a pile of NSTs, then maybe it is not
such an issue. But with a properly wired "Terry filter", NST failures are
practically unheard of.
Cheers,
Terry
>Jeremy Gassmann
>Cincinnati, Oh
>http://jeremyee.tripod.com
>