How can I contact: List status and help request (David Thomson) ?
Also, how do I subscribe/contact all people in Safety gaps, like (Adam
James) ?
I'm in the middle of building a 4" large Tesla Coil and I have some
questions.
Also, if you have suggestions where else I can get my answers, I'm all ears.
Thank you very much for doing all the work Ted!
Tony Fleming
On Sat, Mar 20, 2021 at 10:04 PM <tesla-request@xxxxxxxxxx> wrote:
> Send Tesla mailing list submissions to
> tesla@xxxxxxxxxxxxxxxxxx
>
> To subscribe or unsubscribe via the World Wide Web, visit
> https://www.pupman.com/mailman/listinfo/tesla
> or, via email, send a message with subject or body 'help' to
> tesla-request@xxxxxxxxxxxxxxxxxx
>
> You can reach the person managing the list at
> tesla-owner@xxxxxxxxxxxxxxxxxx
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Tesla digest..."
>
>
> Today's Topics:
>
> 1. Re: Admin news: You're still subscribed, changes coming
> (Gary Gaspar)
> 2. Re: Admin news: You're still subscribed, changes coming
> (Chip Atkinson)
> 3. Re: Admin news: You're still subscribed, changes coming
> (Chris Reeland)
> 4. Test message (Bert Hickman)
> 5. test message to new list (Lux, Jim)
> 6. Re: Admin: List status and help request (David Thomson)
> 7. Re: Can anyone rent out a tall chainmail suit? (ddraig@xxxxxxxxx)
> 8. Indiana swine (shaun)
> 9. BP coil (Douglas Johnson)
> 10. Safety gaps (Adam James)
> 11. Re: Safety gaps (Liberty Rising)
> 12. Re: Safety gaps (Gary Lau)
> 13. q (shaun)
> 14. Re: Safety gaps (Tedd Dillard)
> 15. Re: Safety gaps (Adam James)
> 16. Re: Safety gaps (Steve White)
> 17. Magnetic quenching (Adam James)
> 18. Re: Magnetic quenching (jhowson4)
> 19. weirdness (Reverend Fuzzy)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 13 Mar 2021 11:04:58 -0800
> From: Gary Gaspar <majrombus@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Admin news: You're still subscribed, changes
> coming
> Message-ID:
> <CAHTwgG4=
> gxhjQ+iHZ56aj14sT0g22aukGGWFGoEeyZbeZv0Vwg@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> Ditto that !
>
> On Sat, Mar 13, 2021 at 11:01 AM Stork <stork3264@xxxxxxxxxxx> wrote:
>
> > Hi Chip,
> >
> > It's good to have you back at the TCLM helm. You're much appreciated.
> >
> > Stork
> >
> >
> > > On 03/13/2021 11:38 AM Chip Atkinson <chip@xxxxxxxxxx> wrote:
> > >
> > >
> > > Greetings all,
> > >
> > > If you got a message saying you've been unsubscribed, please ignore it.
> > >
> > > I'm working on bringing up a new list on a cloud provider. This will
> > > provide additional features.
> > >
> > > The subscriber list was ported to the new server. I unsubscribed you
> > from
> > > the new list so you won't get test messages. Once the new list is up
> > and
> > > working, I'll resubscribe everyone.
> > >
> > > Any feedback welcome.
> > >
> > > Onward and upward!
> > >
> > > Chip Atkinson
> > > Owner, TCML
> > > _______________________________________________
> > > Tesla mailing list
> > > Tesla@xxxxxxxxxxxxxxxxxx
> > > https://www.pupman.com/mailman/listinfo/tesla
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxxxxxx
> > https://www.pupman.com/mailman/listinfo/tesla
> >
>
>
> ------------------------------
>
> Message: 2
> Date: Sat, 13 Mar 2021 12:15:09 -0700 (MST)
> From: Chip Atkinson <chip@xxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Admin news: You're still subscribed, changes
> coming
> Message-ID: <alpine.LRH.2.21.2103131213220.30643@xxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> Thanks guys. Let's not forget that the list wouldn't be as good as it is
> without the tireless work from our moderation team. I greatly
> appreciate their expertise and dedication. Thanks Jim, Gary, and Dave.
>
> Chip
>
> On Sat, 13 Mar 2021, Gary Gaspar wrote:
>
> > Ditto that !
> >
> > On Sat, Mar 13, 2021 at 11:01 AM Stork <stork3264@xxxxxxxxxxx> wrote:
> >
> >> Hi Chip,
> >>
> >> It's good to have you back at the TCLM helm. You're much appreciated.
> >>
> >> Stork
> >>
> >>
> >>> On 03/13/2021 11:38 AM Chip Atkinson <chip@xxxxxxxxxx> wrote:
> >>>
> >>>
> >>> Greetings all,
> >>>
> >>> If you got a message saying you've been unsubscribed, please ignore it.
> >>>
> >>> I'm working on bringing up a new list on a cloud provider. This will
> >>> provide additional features.
> >>>
> >>> The subscriber list was ported to the new server. I unsubscribed you
> >> from
> >>> the new list so you won't get test messages. Once the new list is up
> >> and
> >>> working, I'll resubscribe everyone.
> >>>
> >>> Any feedback welcome.
> >>>
> >>> Onward and upward!
> >>>
> >>> Chip Atkinson
> >>> Owner, TCML
> >>> _______________________________________________
> >>> Tesla mailing list
> >>> Tesla@xxxxxxxxxxxxxxxxxx
> >>> https://www.pupman.com/mailman/listinfo/tesla
> >> _______________________________________________
> >> Tesla mailing list
> >> Tesla@xxxxxxxxxxxxxxxxxx
> >> https://www.pupman.com/mailman/listinfo/tesla
> >>
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxxxxxx
> > https://www.pupman.com/mailman/listinfo/tesla
> >
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 13 Mar 2021 13:18:17 -0600
> From: Chris Reeland <chrisreeland@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Admin news: You're still subscribed, changes
> coming
> Message-ID:
> <CAPVCm=
> N8mMrsF+eqfZY7T7oYtET_N9+2SYZS5wT1FJ1wDWU0rA@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> "Onward and upward!"
>
> Great hear this! :^)
>
> Chris Reeland
> Ladd Illinois USA
>
> Sent from my Samsung Galaxy Tab? S
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 13 Mar 2021 15:18:48 -0600
> From: Bert Hickman <bert@xxxxxxxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: [TCML] Test message
> Message-ID:
> <c1b0655c-74ec-4b7e-a083-eb987cf12c1e@xxxxxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Test message
>
>
> ------------------------------
>
> Message: 5
> Date: Sat, 13 Mar 2021 14:53:05 -0800
> From: "Lux, Jim" <jim@xxxxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: [TCML] test message to new list
> Message-ID: <0a18b4b5-0a66-954d-7e2a-63ff50c443b3@xxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> This is a test. It is only a test. If it were a real message, it would
> contain more content.
>
>
>
> ------------------------------
>
> Message: 6
> Date: Sat, 13 Mar 2021 21:53:10 -0600
> From: David Thomson <aetherwizard@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Admin: List status and help request
> Message-ID:
> <CAD1NOyL1Fg29C=
> aaXWaqBndtpbUF4JsC5EWP7GHeH-HN1DPPWg@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> I have had the blacklisting problem in the past, too. It seems there are
> people out in the world looking for ways to trash the Internet like they do
> their neighborhood. The same people who practice hacking websites also
> practice trashing newsgroups and mailing lists. They learn a way to
> "report" spam, and then go around making all kinds of malicious reports.
> Some people used to spoof messages from other people's mailing lists, and I
> think that has a lot to do with the current black listing efforts.
>
> The end result is that free and independent news sites and forums are being
> herded into the big name social media providers and their platforms,
> because they have the AI algorithms to block spam and provide reliability.
>
> There is a way to fix the email troubles, but it requires some study about
> the current header and footer expectations with regard to privacy,
> disclaimers, and unsubscribe information. I gave up on it years ago as the
> rules keep changing and I have better things to do with my time. If you
> have better things to do with your time than be an email technician, then
> it is best to just use a big name platform for your services.
>
> David Thomson
>
>
>
> On Wed, Mar 10, 2021 at 6:55 AM Chip Atkinson <chip@xxxxxxxxxx> wrote:
>
> > Greetings remaining few,
> >
> > Recently pupman.com has gotten blacklisted for spam. The cause of this
> > is
> > unclear, but the effect is rather severe. It started out that Microsoft
> > based
> > email providers (Hotmail, outlook, etc.) were blocking me. Now I find
> I'm
> > on another black list as well. This means that a large portion of
> > subscribers are not getting the list.
> >
> > My plan is to try a forum based approach. It's a different mode of
> > operation, but it allows communication without email and I believe also
> > still allows those who want it to sign up.
> >
> > In the mean time, is there anyone who can help me figure out the source
> of
> > my email troubles? Any help would be appreciated.
> >
> > Thanks in advance.
> >
> > Chip Atkinson
> > Owner, TCML
> > chip@xxxxxxxxxx
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxxxxxx
> > https://www.pupman.com/mailman/listinfo/tesla
> >
>
>
> ------------------------------
>
> Message: 7
> Date: Sun, 14 Mar 2021 20:19:30 +1100
> From: "ddraig@xxxxxxxxx" <ddraig@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Can anyone rent out a tall chainmail suit?
> Message-ID:
> <CAGfkSy3OPs=UDQv5L5=
> cmdxTsSuthULepzh2JmfecmUAgT+avQ@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> Hi
>
> On Fri, 12 Mar 2021 at 15:48, Ian Charnas <ian.charnas@xxxxxxxxx> wrote:
>
> >
> > I'm part of Tesla <http://teslaorchestra.com/> Orchestra
> > <http://teslaorchestra.com>. We have a chainmail suit that barely fits
> me
> > at 5' 6" but we're looking to do a collaboration with a fellow who is 6'
> 2"
> >
> > Does anyone have a tall chainmail suit that they'd be interested in
> renting
> > out to us briefly?
> >
>
>
> Given that mail suits are usually handmade and take many many many many
> many months of tedious effort, they are hard to come by. Your best bet is
> to look for a local mediaeval re-enactment group. If there's an SCA branch
> nearby they might have one. I used to be a re-enactor, but mail was way too
> tedious for me. Assuming that you are going to have vast blobs of
> electricity washing across it, you might want to mention what you want to
> do with it to the person who owns it, as damage might, again, be
> super-tedious to repair.
>
> Given that you did not provide a location uhhhhhhh assuming you are in the
> US you might be lucky.
>
> ddraig
> --
> ddraig@xxxxxxxxx ddraigbot / NSO / Connery
> ...r.e.t.u.r.n....t.o....t.h.e....s.o.u.r.c.e...
> http://fav.me/dqkgpd
> <http://tinyurl.com/he-is-right-you-know-jpg>
> our aim is wakefulness, our enemy is dreamless sleep
>
>
> ------------------------------
>
> Message: 8
> Date: Sun, 14 Mar 2021 13:31:42 -0400
> From: "shaun" <snoggle@xxxxxxxxxxxxxx>
> To: <tesla@xxxxxxxxxxxxxxxxxx>
> Subject: [TCML] Indiana swine
> Message-ID: <002301d718f7$e692fb60$b3b8f220$@com>
> Content-Type: text/plain; charset="us-ascii"
>
> Anyone in Indiana or Ohio have a 14.400 pig of any size to sell. Thanks
> snoggle@xxxxxxxxxxxxxx
>
>
>
> ------------------------------
>
> Message: 9
> Date: Tue, 16 Mar 2021 13:58:03 -0400
> From: Douglas Johnson <doug379306@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: [TCML] BP coil
> Message-ID:
> <CAD=
> mYbP4MqiodohXWGyiczTmkK7r8uckh5fJit3z+WJT3+Xq1A@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> https://www.youtube.com/watch?v=QZUCgi4XXyo
> This is the aforementioned {24" BP} With the new secondary, 3.5" X 28.5"
> AWG28, 10uf/9-30 NST. Runners are no longer a problem. First test was with
> toroids covering the first one inch of secondary windings, This video was
> with toroids set out 1 inch. Performance improved with the one inch setout.
> Distance to end of the Fluorescent tube is 10"
> DRJ
>
>
> ------------------------------
>
> Message: 10
> Date: Tue, 16 Mar 2021 13:45:59 -0500
> From: Adam James <adamjamesarmy60@xxxxxxxxx>
> To: "tesla@xxxxxxxxxxxxxxxxxx" <tesla@xxxxxxxxxxxxxxxxxx>
> Subject: [TCML] Safety gaps
> Message-ID:
> <CAO=
> aTzOJeNDZaeoWEaYk4VmrsbixU-TNCH448wbXRrxEs40_uQ@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> Hello all,
> Is there anything better than a simple safety gap, but less than a
> terryfilter for SG coils?
> AJ
>
>
> ------------------------------
>
> Message: 11
> Date: Tue, 16 Mar 2021 19:42:15 -0400
> From: Liberty Rising <garretsontech@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Safety gaps
> Message-ID:
> <
> CAE06n1AuN6pCqxYU4iuCJbVFxzkZqVsdbNdrhpKpCF-AXcf8Jw@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> What are you using to power your primary? If its an NST, I strongly
> recommend both a Terry filter and a conservatively set safety gap. The cost
> of a Terry filter is nominal and and very rewarding to build and learn how
> it works. Once one of the secondaries of an NST shorts out it then becomes
> a very expensive doorstop. Sorry if thats not the answer you wanted to
> hear, but this is just one mans opinion (although it is an opinion based on
> regretful past experiences).
>
> BTW - Anybody out there have a France 15/60 for sale??? I really need
> one!!! : (
>
> Best!!!
>
> - Brandon G.
>
> On Tue, Mar 16, 2021 at 7:18 PM Adam James <adamjamesarmy60@xxxxxxxxx>
> wrote:
>
> > Hello all,
> > Is there anything better than a simple safety gap, but less than a
> > terryfilter for SG coils?
> > AJ
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxxxxxx
> > https://www.pupman.com/mailman/listinfo/tesla
> >
>
>
> ------------------------------
>
> Message: 12
> Date: Tue, 16 Mar 2021 20:25:25 -0400
> From: Gary Lau <glau1024@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Safety gaps
> Message-ID:
> <CAKV84bbtyzj5tHcWmtxGZ3kMXVP5RkfOC2wMA2KnMYk=
> iGeV0g@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> A Terry filter contains three independent circuits and you can choose to
> use any or all. I have a web page detailing the how's and why's of
> protection circuits - http://www.laushaus.com/tesla/protection.htm
>
> 1) A 3-terminal safety gap. This is the cheapest of the 3 parts and by
> far, is the most important. But to be useful, the gap width must be set to
> just wider than the NST open-circuit voltage sparking voltage. If you set
> it to where it stops firing when you're running your coil, you've
> accomplished nothing.
>
> 2) An R-C low-pass filter. This filters out VHF transients resulting from
> some seldom-discussed spark gap behaviors. Read my web page above for
> details. Since the components for an R-C filter are pretty cheap, no
> reason not to use it.
>
> 3) MOV voltage limiters. The MOV's must be carefully chosen to have a
> clamping voltage well in excess of the peak cap-charging voltage, but not
> so high as to never conduct, even in the face of an over-voltage
> (uncontrolled resonant rise) event. If you're going to skimp, this is
> probably the place to do it.
>
> Further questions and discussion - very welcome!
>
> Regards, Gary Lau
> MA, USA
>
> On Tue, Mar 16, 2021 at 7:18 PM Adam James <adamjamesarmy60@xxxxxxxxx>
> wrote:
>
> > Hello all,
> > Is there anything better than a simple safety gap, but less than a
> > terryfilter for SG coils?
> > AJ
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxxxxxx
> > https://www.pupman.com/mailman/listinfo/tesla
> >
>
>
> ------------------------------
>
> Message: 13
> Date: Tue, 16 Mar 2021 22:19:09 -0400
> From: "shaun" <snoggle@xxxxxxxxxxxxxx>
> To: <tesla@xxxxxxxxxxxxxxxxxx>
> Subject: [TCML] q
> Message-ID: <002501d71ad3$ea4067b0$bec13710$@com>
> Content-Type: text/plain; charset="us-ascii"
>
> In javapc the secondary q number for some of the ones I have played with,
> the q is 300 to 312. I know the higher the q, the longer it rings. So my
> question is, what is a good q number. Is 300 good, 400 better.? Or the
> other
> way 200 or lower. What are we shooting for. Don't need a long explanation,
> just a ball park on the q number. Thanks
>
>
>
> ------------------------------
>
> Message: 14
> Date: Tue, 16 Mar 2021 22:41:24 -0400
> From: Tedd Dillard <tedd.dillard@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Safety gaps
> Message-ID:
> <CABebsSkp+44+9dGBM=4wSjSFLZ11e8xXYuysZcoofYwu=
> 6U1UA@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> Gary this all very interesting and also the result of much work on your
> part.
> What can you say about protection for pole transformers?
> Teddy
>
> On Tue, Mar 16, 2021, 8:25 PM Gary Lau <glau1024@xxxxxxxxx> wrote:
>
> > A Terry filter contains three independent circuits and you can choose to
> > use any or all. I have a web page detailing the how's and why's of
> > protection circuits - http://www.laushaus.com/tesla/protection.htm
> >
> > 1) A 3-terminal safety gap. This is the cheapest of the 3 parts and by
> > far, is the most important. But to be useful, the gap width must be set
> to
> > just wider than the NST open-circuit voltage sparking voltage. If you
> set
> > it to where it stops firing when you're running your coil, you've
> > accomplished nothing.
> >
> > 2) An R-C low-pass filter. This filters out VHF transients resulting
> from
> > some seldom-discussed spark gap behaviors. Read my web page above for
> > details. Since the components for an R-C filter are pretty cheap, no
> > reason not to use it.
> >
> > 3) MOV voltage limiters. The MOV's must be carefully chosen to have a
> > clamping voltage well in excess of the peak cap-charging voltage, but not
> > so high as to never conduct, even in the face of an over-voltage
> > (uncontrolled resonant rise) event. If you're going to skimp, this is
> > probably the place to do it.
> >
> > Further questions and discussion - very welcome!
> >
> > Regards, Gary Lau
> > MA, USA
> >
> > On Tue, Mar 16, 2021 at 7:18 PM Adam James <adamjamesarmy60@xxxxxxxxx>
> > wrote:
> >
> > > Hello all,
> > > Is there anything better than a simple safety gap, but less than a
> > > terryfilter for SG coils?
> > > AJ
> > > _______________________________________________
> > > Tesla mailing list
> > > Tesla@xxxxxxxxxxxxxxxxxx
> > > https://www.pupman.com/mailman/listinfo/tesla
> > >
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxxxxxx
> > https://www.pupman.com/mailman/listinfo/tesla
> >
>
>
> ------------------------------
>
> Message: 15
> Date: Wed, 17 Mar 2021 10:10:45 -0500
> From: Adam James <adamjamesarmy60@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Safety gaps
> Message-ID:
> <CAO=aTzPiZ3hrH5b4XUqhpJv_ZKbLb=
> wo2ZGkp6or+m4E7fvqFA@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> Thank you all for your input.
> I have built 4 of the TF's from the design found here>
> http://www.hvtesla.com/terry.html< two for myself and two for friends. My
> reasoning for the question was that I am building some rather smallish
> coils and wondered if there was something between the TF and a plain
> safety gap. I may try two safety gaps in line on a coil.
> Worst case is that I could acquire a 6KV door stop?
> PS, I wish one of you brainiacs would find a way to use the smaller GF
> NST's without tearing into it to remove the GF circuit.?
> AJ
>
> On Tue, Mar 16, 2021 at 11:11 PM Tedd Dillard <tedd.dillard@xxxxxxxxx>
> wrote:
>
> > Gary this all very interesting and also the result of much work on your
> > part.
> > What can you say about protection for pole transformers?
> > Teddy
> >
> > On Tue, Mar 16, 2021, 8:25 PM Gary Lau <glau1024@xxxxxxxxx> wrote:
> >
> > > A Terry filter contains three independent circuits and you can choose
> to
> > > use any or all. I have a web page detailing the how's and why's of
> > > protection circuits - http://www.laushaus.com/tesla/protection.htm
> > >
> > > 1) A 3-terminal safety gap. This is the cheapest of the 3 parts and by
> > > far, is the most important. But to be useful, the gap width must be
> set
> > to
> > > just wider than the NST open-circuit voltage sparking voltage. If you
> > set
> > > it to where it stops firing when you're running your coil, you've
> > > accomplished nothing.
> > >
> > > 2) An R-C low-pass filter. This filters out VHF transients resulting
> > from
> > > some seldom-discussed spark gap behaviors. Read my web page above for
> > > details. Since the components for an R-C filter are pretty cheap, no
> > > reason not to use it.
> > >
> > > 3) MOV voltage limiters. The MOV's must be carefully chosen to have a
> > > clamping voltage well in excess of the peak cap-charging voltage, but
> not
> > > so high as to never conduct, even in the face of an over-voltage
> > > (uncontrolled resonant rise) event. If you're going to skimp, this is
> > > probably the place to do it.
> > >
> > > Further questions and discussion - very welcome!
> > >
> > > Regards, Gary Lau
> > > MA, USA
> > >
> > > On Tue, Mar 16, 2021 at 7:18 PM Adam James <adamjamesarmy60@xxxxxxxxx>
> > > wrote:
> > >
> > > > Hello all,
> > > > Is there anything better than a simple safety gap, but less than a
> > > > terryfilter for SG coils?
> > > > AJ
> > > > _______________________________________________
> > > > Tesla mailing list
> > > > Tesla@xxxxxxxxxxxxxxxxxx
> > > > https://www.pupman.com/mailman/listinfo/tesla
> > > >
> > > _______________________________________________
> > > Tesla mailing list
> > > Tesla@xxxxxxxxxxxxxxxxxx
> > > https://www.pupman.com/mailman/listinfo/tesla
> > >
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxxxxxx
> > https://www.pupman.com/mailman/listinfo/tesla
> >
>
>
> ------------------------------
>
> Message: 16
> Date: Wed, 17 Mar 2021 00:29:10 -0400 (EDT)
> From: Steve White <steve.white1@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Safety gaps
> Message-ID:
> <803220637.1398793.1615955350509.JavaMail.zimbra@xxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
>
> In general, pole transformers shouldn't need any protection. They are
> built much more ruggedly than NSTs with typical BIL ratings of around 100
> KV. That being said, I did add a simple RC low pass filter to my 10 KVA
> pole transformer just for a little extra insurance. It was very simple to
> build and I already had two extra 40 KV doorknob capacitors laying around.
> I also have a safety gap.
>
> I have only heard of two instances of someone damaging a pole transformer
> and it wasn't from Tesla coil use. They had attached a large transformer to
> the output to be able to draw very long arcs. The high voltage caused by
> the resonant rise killed the secondary coil.
>
> Steve White
> Cedar Rapids, Iowa
>
> ----- Original Message -----
> From: "Tedd Dillard" <tedd.dillard@xxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Tuesday, March 16, 2021 9:41:24 PM
> Subject: Re: [TCML] Safety gaps
>
> Gary this all very interesting and also the result of much work on your
> part.
> What can you say about protection for pole transformers?
> Teddy
>
> On Tue, Mar 16, 2021, 8:25 PM Gary Lau <glau1024@xxxxxxxxx> wrote:
>
> > A Terry filter contains three independent circuits and you can choose to
> > use any or all. I have a web page detailing the how's and why's of
> > protection circuits - http://www.laushaus.com/tesla/protection.htm
> >
> > 1) A 3-terminal safety gap. This is the cheapest of the 3 parts and by
> > far, is the most important. But to be useful, the gap width must be set
> to
> > just wider than the NST open-circuit voltage sparking voltage. If you
> set
> > it to where it stops firing when you're running your coil, you've
> > accomplished nothing.
> >
> > 2) An R-C low-pass filter. This filters out VHF transients resulting
> from
> > some seldom-discussed spark gap behaviors. Read my web page above for
> > details. Since the components for an R-C filter are pretty cheap, no
> > reason not to use it.
> >
> > 3) MOV voltage limiters. The MOV's must be carefully chosen to have a
> > clamping voltage well in excess of the peak cap-charging voltage, but not
> > so high as to never conduct, even in the face of an over-voltage
> > (uncontrolled resonant rise) event. If you're going to skimp, this is
> > probably the place to do it.
> >
> > Further questions and discussion - very welcome!
> >
> > Regards, Gary Lau
> > MA, USA
> >
> > On Tue, Mar 16, 2021 at 7:18 PM Adam James <adamjamesarmy60@xxxxxxxxx>
> > wrote:
> >
> > > Hello all,
> > > Is there anything better than a simple safety gap, but less than a
> > > terryfilter for SG coils?
> > > AJ
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> ------------------------------
>
> Message: 17
> Date: Fri, 19 Mar 2021 09:41:54 -0500
> From: Adam James <adamjamesarmy60@xxxxxxxxx>
> To: "tesla@xxxxxxxxxxxxxxxxxx" <tesla@xxxxxxxxxxxxxxxxxx>
> Subject: [TCML] Magnetic quenching
> Message-ID:
> <CAO=
> aTzOsf_HR7mX6hobvA5kdTg4zFHA2zr5dAxwFvRMUPA1M8g@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="UTF-8"
>
> Can someone explain magnetic quenching of spark gaps, please
> AJ
>
>
> ------------------------------
>
> Message: 18
> Date: Fri, 19 Mar 2021 12:22:25 -0400
> From: jhowson4 <jhowson4@xxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Magnetic quenching
> Message-ID: <mailman.1314.1616295849.11990.tesla@xxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
>
> It involves the motion of charge carriers thru a magnetic field.?Set it up
> so the current path and field are perpendicular and the field pulls the
> charge carriers off to the side disrupting the current path and thus
> quenching the gap more readily than without a field.?You can look up the
> right hand rule and the motion of charged particles in magnetic fields for
> more info. Basic E&M physics so should be easy to find info.?This is useful
> particularly where the tank current is high and thus the arc is hotter and
> self quenching takes longer than you would like. If you get even bigger
> moving to a rotary gap is better.?-Jay
> -------- Original message --------From: Adam James <
> adamjamesarmy60@xxxxxxxxx> Date: 3/19/21 11:31 AM (GMT-05:00) To: "
> tesla@xxxxxxxxxxxxxxxxxx" <tesla@xxxxxxxxxx> Subject: [TCML] Magnetic
> quenching Can someone explain magnetic quenching of spark gaps,
> pleaseAJ_______________________________________________Tesla mailing
> listTesla@tedward.pupman.comhttps://www.pupman.com/mailman/listinfo/tesla
>
> ------------------------------
>
> Message: 19
> Date: Sat, 20 Mar 2021 21:24:07 -0500
> From: Reverend Fuzzy <pastor@xxxxxxxxxxxxxxxxx>
> To: "Pupman Tesla List [TCML]" <tesla@xxxxxxxxxx>
> Subject: [TCML] weirdness
> Message-ID: <095c411b-3ab1-7c5a-9b14-e11375a41686@xxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Earlier this week, I got a message from the list server that I was now
> unsubscribed.
>
> Attempting to re-subscribe said I was already on the list.
>
> Did something weird weird happen that I need to know about?
>
>
>
>
> ------------------------------
>
> Subject: Digest Footer
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> ------------------------------
>
> End of Tesla Digest, Vol 159, Issue 4
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