Hello,
Variacs:
Remember, these are auto-transformers. The primary is also the secondary.
When you use less than 100% of the tap point where the supply power
connects, the current in = the current out, minus a little loss due to
efficiency. But, when you push to 100% or higher output, the input current
goes up rapidly due to needing to also excite the top windings. So 10 amps
output may require 15 amps or more on the input section of the winding. By
changing the rotor position under load causes brush arcing, which is
especially bad near the upper input tap point of the winding.
One way to protect your variac is to use a series reactor. Preset the variac
to a constant setting, then close in with a disconnect switch (like a motor
starter) and soft start it. Then step up the series reactor to full run
position. It's better to never move the variac if you are under heavy
inductive load as a variac is actually a series of voltage steps (like going
up a ladder). Variacs are discontinuous and not like a carbon potentiometer.
If you want a heavy duty variac, you need a 6-gang 480-VAC unit... higher
input voltage to reduce the current load on the brushes and 6-gang to handle
the heat. You need to try a
https://variac.com/staco_50006000_series_3_9_motor.htm
Be careful!
Dick
-----Original Message-----
From: Tesla [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of
tesla-request@xxxxxxxxxx
Sent: Tuesday, August 27, 2019 12:30 PM
To: tesla@xxxxxxxxxx
Subject: Tesla Digest, Vol 141, Issue 2
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. Variac choices. (James Janota)
2. Re: Variac choices. (derstrom8@xxxxxxx)
3. Re: Variac choices. (Bert Hickman)
4. Re: Variac choices. (Andrew Robinson)
5. Re: Variac choices. (Chip Atkinson)
6. Re: Variac choices. (Yurtle Turtle)
7. Re: Variac choices. (Miles Mauldin)
8. Effects of Frequency (Jeremiah Schmidt)
9. Looking for caps (Brian Decosta)
10. Re: Effects of Frequency (Frank)
11. Picture of the Tesla coil elements. (James Janota)
12. Re: Picture of the Tesla coil elements. (Gary Lau)
13. Re: Picture of the Tesla coil elements. (Rinner)
14. Small tweak to anti-spam rules.. (Chip Atkinson)
15. Need capacitors (Brian Decosta)
16. Re: Need capacitors (Yurtle Turtle)
17. Re: Need capacitors (Daniel Kunkel)
18. Re: Need capacitors (Ronald Reeland)
19. Re: Need capacitors (Allen Bishop)
----------------------------------------------------------------------
Message: 1
Date: Wed, 14 Aug 2019 13:01:30 -0400
From: James Janota <j.janota@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: [TCML] Variac choices.
Message-ID: <2B2CFE35-A92E-429D-98EE-87AC5415CDD4@xxxxxxxxxx>
Content-Type: text/plain; charset=us-ascii
I was looking at various Variac models and kind of concerned about what I
should be looking at. Any advice from you all would be appreciated.
Regards
James Janota
(727)512-7112 Phone
(727)595-6625 Fax
------------------------------
Message: 2
Date: Thu, 15 Aug 2019 00:15:37 +0000 (UTC)
From: derstrom8@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: [TCML] Variac choices.
Message-ID: <43690632.3957236.1565828137249@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8
Hello James,
First of all, I recommend staying away from the ultra-cheap Chinese ones
like this:
https://www.circuitspecialists.com/content/451335/tdgc2-2d-0.jpg
I know that it may be tempting to go for it simply because it's ridiculously
cheap (for a variac), but usually if the price seems too good to be true, it
is.These cheap Chinese-made ones have an extremely poor build quality and
are known to fail very easily and frequently - the windings and contacts
melt, causing irreparable damage and even safety hazards.? Generally
speaking, your best option is to look for older models. You might try Ebay,
though shipping will probably be an issue due to the weight. Also check
Craigslist or even Facebook Marketplace. You can sometimes find some gems
there. Same with swap meets or hamfests. Also check with your local
university, though I have never had much luck with this option. Then again,
I live up in the sticks so there's really not a whole lot up here anyway....
Be mindful of the current rating of the Variac. While they can normally
handle large surges (~10x their rated current) for very short periods of
time, they should not be left connected to a load which draws above the
rated current for an extended period of time. This can cause overheating and
permanent damage to the windings and/or brushes. Choose one with a current
rating that will be suitable for your application. Also be aware that if you
buy one rated for higher than 15 amps, a standard household outlet will not
be able to handle it.
Just a few tips to get you started.
Best,
Matt Lewis, Fairlee VT
-----Original Message-----
From: James Janota via Tesla <tesla@xxxxxxxxxx>
To: tesla <tesla@xxxxxxxxxx>
Sent: Wed, Aug 14, 2019 7:36 pm
Subject: [TCML] Variac choices.
I was looking at various Variac models and kind of concerned about what I
should be looking at. Any advice from you all would be appreciated.
Regards
James Janota
(727)512-7112 Phone
(727)595-6625 Fax
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla
------------------------------
Message: 3
Date: Wed, 14 Aug 2019 20:29:20 -0500
From: Bert Hickman <bert@xxxxxxxxxxxxxxxxxxxxx>
To: James Janota <j.janota@xxxxxxxxxx>, Tesla Coil Mailing List
<tesla@xxxxxxxxxx>
Subject: Re: [TCML] Variac choices.
Message-ID:
<ce92ceb8-9647-f58a-c673-f8f0128347da@xxxxxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hi James,
Surplus US-manufactured variable autotransformers are significantly more
robust and reliable than newer Chinese autotransformers. For example,
surplus Staco, Superior, Ohmite, General Radio, and GE are built to run
at 100% of their face plate ratings continuously, and at 2X their rated
current for up to 20 minutes. Most 115-120 volt units are rated at full
current for the full output range of 0-130 or 0-140 volts. For example,
here are Staco's overload curves. The overload ratings for the other
manufacturers are similar:
http://www.capturedlightning.com/photos/P-Chokes/staco_Overload_graph.jpg
Unfortunately, Chinese autotransformers are made using smaller cores,
fewer turns of smaller diameter wire, and smaller sized brushes. They
use every trick in the book to minimize manufacturing cost, just like
hot-running microwave oven transformers. As a result, these units tend
to overheat when operated for any length of time at the "rated" output
current.
Also, look carefully at the specifications - some Chinese manufacturers
specify rated output current at only 100 volts, not up to the maximum
output voltage. Because these units have fewer turns and smaller core
cross-sectional area, they operate closer to core saturation, causing
them to draw more no-load current. The smaller core and wire mass result
in less thermal mass, which when combined with lower operating
efficiency, they run hot, and quickly overheat when stressed.
So, as long as you don't abuse them and let them cool down periodically,
Chinese variacs can be made to work for Tesla Coil use. However, if
you're like most coilers, you'll need the reserve power handling of a
solidly-made variac when you start cranking up the power to "11" or
"12". I'd recommend getting a surplus US-made variac off eBay or at a
hamfest if you plan to do any serious coiling.
Bert
James Janota via Tesla wrote:
> I was looking at various Variac models and kind of concerned about what I
should be looking at. Any advice from you all would be appreciated.
>
> Regards
>
> James Janota
> (727)512-7112 Phone
> (727)595-6625 Fax
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxxxxxx
> https://www.pupman.com/mailman/listinfo/tesla
>
>
------------------------------
Message: 4
Date: Thu, 15 Aug 2019 00:31:15 -0400
From: "Andrew Robinson" <arobinson@xxxxxxxxxxxx>
To: "'James Janota'" <j.janota@xxxxxxxxxx>, "'Tesla Coil Mailing
List'" <tesla@xxxxxxxxxx>
Subject: Re: [TCML] Variac choices.
Message-ID: <014501d55322$46e7d690$d4b783b0$@teslamad.com>
Content-Type: text/plain; charset="us-ascii"
Contact me off list. I have a few very large Powerstat and Staco variac
stacks I am looking to offload.
------------------------------
Message: 5
Date: Thu, 15 Aug 2019 07:57:10 -0600 (MDT)
From: Chip Atkinson <chip@xxxxxxxxxx>
To: James Janota <j.janota@xxxxxxxxxx>, Tesla Coil Mailing List
<tesla@xxxxxxxxxx>
Subject: Re: [TCML] Variac choices.
Message-ID: <alpine.LRH.2.21.1908150756360.12710@xxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Where are you located and what size are you looking at?
On Wed, 14 Aug 2019, James Janota via Tesla wrote:
> I was looking at various Variac models and kind of concerned about what I
should be looking at. Any advice from you all would be appreciated.
>
> Regards
>
> James Janota
> (727)512-7112 Phone
> (727)595-6625 Fax
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxxxxxx
> https://www.pupman.com/mailman/listinfo/tesla
>
------------------------------
Message: 6
Date: Thu, 15 Aug 2019 13:50:44 +0000 (UTC)
From: Yurtle Turtle <yurtle_t@xxxxxxxxx>
To: tesla@xxxxxxxxxx, James Janota <j.janota@xxxxxxxxxx>
Subject: Re: [TCML] Variac choices.
Message-ID: <851326467.346869.1565877044713@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8
Ham Fests are a great place to find them. As others have mentioned, stay
with tried and true manufacturers. Look for burnt windings and brush length.
Brushes are wear items, and may already be past their useful lives.
On Wednesday, August 14, 2019, 7:36:15 PM EDT, James Janota via Tesla
<tesla@xxxxxxxxxx> wrote:
I was looking at various Variac models and kind of concerned about what I
should be looking at. Any advice from you all would be appreciated.
Regards
James Janota
(727)512-7112 Phone
(727)595-6625 Fax
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla
------------------------------
Message: 7
Date: Fri, 16 Aug 2019 14:37:39 -0400
From: Miles Mauldin <teslamiles@xxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Subject: Re: [TCML] Variac choices.
Message-ID: <3122B97B-6FDE-4369-BCE9-7776776D91F2@xxxxxxx>
Content-Type: text/plain; charset=us-ascii
Andrew,
Sent you an email, maybe sitting in your SPAM folder. Contacting you
regarding Variacs.
Best!
Miles
Sent from a device with a tiny keyboard...
> On Aug 15, 2019, at 12:31 AM, Andrew Robinson <arobinson@xxxxxxxxxxxx>
wrote:
>
> Contact me off list. I have a few very large Powerstat and Staco variac
> stacks I am looking to offload.
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxxxxxx
> https://www.pupman.com/mailman/listinfo/tesla
------------------------------
Message: 8
Date: Tue, 20 Aug 2019 09:48:40 -0600
From: Jeremiah Schmidt <jeremiahschmidt1018@xxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: [TCML] Effects of Frequency
Message-ID:
<CAHRoP7CYZrA-S3bQB_iv_ojwCDcSWhkNXtx4o8eph=xNjPFa7g@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
So, just a curiousity. I was scoping PTs on a surplus site, and seen alot
of marine and aero generators/transformers that operate on a 400Hz
frequency. A brief googling explained the purpose of the higher frequency
for better dc rectification.
But just kind of a hypothetical...
What would the effects of hooking up a general SGTC to a higher frequency
line? Component-wise, and as a whole overall?
Alchemy(n): When scientific methods become more art than science.
------------------------------
Message: 9
Date: Tue, 20 Aug 2019 14:05:56 -0500
From: Brian Decosta <briandecosta38305@xxxxxxxxx>
To: Tesla@xxxxxxxxxxxxxxxxxx
Subject: [TCML] Looking for caps
Message-ID: <36405A12-2940-4A98-8B17-D6BD6F52D25B@xxxxxxxxx>
Content-Type: text/plain; charset=us-ascii
Does anyone on the list have any SP2550-2 Eurofarad 3.75 uF 580V RMS caps
that they are not using? If so I need about 10 of them.
Thanks
Brian
Sent from my iPhone
------------------------------
Message: 10
Date: Tue, 20 Aug 2019 13:15:14 -0700
From: Frank <fxrays@xxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Subject: Re: [TCML] Effects of Frequency
Message-ID: <7B.D2.25020.8D45C5D5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
400 hz does not need as much iron in transformers or large capacities
for power supplies. Less filtering was required for the DC at higher
frequencies. This meant smaller component sizes and less weight for
the avionics to help conserve weight in the aircraft. This meant they
could have higher payloads and less fuel waste lugging "necessary"
parts of the aircraft.
At 09:48 AM 20/08/19 -0600, you wrote:
>So, just a curiousity. I was scoping PTs on a surplus site, and seen alot
>of marine and aero generators/transformers that operate on a 400Hz
>frequency. A brief googling explained the purpose of the higher frequency
>for better dc rectification.
>But just kind of a hypothetical...
>What would the effects of hooking up a general SGTC to a higher frequency
>line? Component-wise, and as a whole overall?
>
>Alchemy(n): When scientific methods become more art than science.
>_______________________________________________
>Tesla mailing list
>Tesla@xxxxxxxxxxxxxxxxxx
>https://www.pupman.com/mailman/listinfo/tesla
------------------------------
Message: 11
Date: Thu, 22 Aug 2019 12:20:12 -0400
From: James Janota <j.janota@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: [TCML] Picture of the Tesla coil elements.
Message-ID: <9E3743A1-AA42-4875-AD82-5BFF62959328@xxxxxxxxxx>
Content-Type: text/plain; charset=us-ascii
I hope this works. These are pictures of the stuff I made and procured to
build my SGTC. Can someone critique the stuff I have made?
https://photos.app.goo.gl/azRZWVatmYd9SRHe6
Regards
James Janota
(727)512-7112 Phone
(727)595-6625 Fax
------------------------------
Message: 12
Date: Thu, 22 Aug 2019 21:28:40 -0400
From: Gary Lau <glau1024@xxxxxxxxx>
To: James Janota <j.janota@xxxxxxxxxx>, Tesla Coil Mailing List
<tesla@xxxxxxxxxx>
Subject: Re: [TCML] Picture of the Tesla coil elements.
Message-ID:
<CAKV84bbmfWDOZnMhA7357G-R0Rn2wNo-L=GYRiE4p64ouU=ZPQ@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
Hi James,
Good start! A few observations...
I was unable to read what value resistor you are using for bleeder
resistors, but it appeared that you just wrapped the leads together, rather
than soldering? I'd recommend soldering them
It looks like you have a 25-long string of 0.15uF/600VDC CD 942C caps. The
overall value comes to .006uF @15KVDC. The cap type and uF rating are a
good match for your 15/30 NST, but the voltage rating is a bit on the low
side, given that the peak bang voltage is going to be at least 21KV. It
will work, but with a limited lifespan.
I couldn't judge the secondary dimensions, but the coil looked to be rather
candle-sticky (long and skinny). Generally we shoot for an aspect ratio of
1:5 with about 1000 turns, although there is nothing sacred about these
numbers. 4" PVC is typical for your NST size. Where are you? I'm still
trying to give away a 4" secondary, provided I don't have to pack & ship it.
Regards, Gary Lau
MA, USA
On Thu, Aug 22, 2019 at 9:05 PM James Janota via Tesla <tesla@xxxxxxxxxx>
wrote:
> I hope this works. These are pictures of the stuff I made and procured to
> build my SGTC. Can someone critique the stuff I have made?
>
> https://photos.app.goo.gl/azRZWVatmYd9SRHe6
>
> Regards
>
> James Janota
> (727)512-7112 Phone
> (727)595-6625 Fax
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxxxxxx
> https://www.pupman.com/mailman/listinfo/tesla
>
------------------------------
Message: 13
Date: Fri, 23 Aug 2019 16:06:23 -0500
From: Rinner <msweeney23@xxxxxxxxx>
To: James Janota <j.janota@xxxxxxxxxx>, Tesla Coil Mailing List
<tesla@xxxxxxxxxx>
Subject: Re: [TCML] Picture of the Tesla coil elements.
Message-ID:
<CALKWr0Z5kU4nLUx4HNBHQ5gu2sHrkCjiFadfN-sHRgYexSe=bA@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
>From my own experience I would strongly suggest soldering those bleeder
resistors and clipping the wire flush with the solder bead. Try to minimize
sharp points in that area as much as possible it can have a big impact on
overall performance.
On Thu, Aug 22, 2019, 8:05 PM James Janota via Tesla <tesla@xxxxxxxxxx>
wrote:
> I hope this works. These are pictures of the stuff I made and procured to
> build my SGTC. Can someone critique the stuff I have made?
>
> https://photos.app.goo.gl/azRZWVatmYd9SRHe6
>
> Regards
>
> James Janota
> (727)512-7112 Phone
> (727)595-6625 Fax
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxxxxxx
> https://www.pupman.com/mailman/listinfo/tesla
>
------------------------------
Message: 14
Date: Mon, 26 Aug 2019 07:57:49 -0600 (MDT)
From: Chip Atkinson <chip@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: [TCML] Small tweak to anti-spam rules..
Message-ID: <alpine.LRH.2.21.1908260756001.3673@xxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset=US-ASCII
Greetings,
I made a small tweak to the anti-spam rules on the server. I don't think
it should block anyone, but if you do find you are unable to send to the
list, let me know at chip.atkinson@xxxxxxxxx
Chip
------------------------------
Message: 15
Date: Mon, 26 Aug 2019 23:21:27 -0500
From: Brian Decosta <briandecosta38305@xxxxxxxxx>
To: Tesla Mailing List <Tesla@xxxxxxxxxxxxxxxxxx>
Subject: [TCML] Need capacitors
Message-ID: <40418D75-5B7B-4620-B17A-6F2633EAC141@xxxxxxxxx>
Content-Type: text/plain; charset=us-ascii
Does anyone on the list have any SP2550-2 Eurofarad 3.75 uF 580V RMS caps
that they are not using? If so I need about 10 of them.
Thanks
Brian
Sent from my iPhone
------------------------------
Message: 16
Date: Tue, 27 Aug 2019 11:26:17 +0000 (UTC)
From: Yurtle Turtle <yurtle_t@xxxxxxxxx>
To: Tesla Mailing List <Tesla@xxxxxxxxxx>, Tesla Coil Mailing List
<tesla@xxxxxxxxxx>
Subject: Re: [TCML] Need capacitors
Message-ID: <130442337.3184167.1566905177138@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8
"Eurofarad". Is that a thing, or just a joke/pun/??
On Tuesday, August 27, 2019, 7:20:59 AM EDT, Brian Decosta
<briandecosta38305@xxxxxxxxx> wrote:
Does anyone on the list have any SP2550-2 Eurofarad 3.75 uF 580V RMS caps
that they are not using?? If so I need about 10 of them.
Thanks
Brian
Sent from my iPhone
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla
------------------------------
Message: 17
Date: Tue, 27 Aug 2019 08:04:06 -0500
From: Daniel Kunkel <dankunkel@xxxxxxxxx>
To: Yurtle Turtle <yurtle_t@xxxxxxxxx>, Tesla Coil Mailing List
<tesla@xxxxxxxxxx>
Subject: Re: [TCML] Need capacitors
Message-ID:
<CAA7NYCfE4OscK4J=zvH98Yny+ZfM0jbcWz9bnAiN_UwxZe=_XQ@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
Yurtle,
It threw me for a loop too! Surely it is an auto-correct thing. However,
from what I can tell, "Eurofarad" is a brand of capacitor. The part number
is also specifically mentioned here:
http://onetesla.com/tutorials/resonator-design
But there are more examples: https://www.tedss.com/2020039156
Thanks,
~Dan
Kansas City area
On Tue, Aug 27, 2019 at 7:50 AM Yurtle Turtle via Tesla <tesla@xxxxxxxxxx>
wrote:
> "Eurofarad". Is that a thing, or just a joke/pun/??
>
> On Tuesday, August 27, 2019, 7:20:59 AM EDT, Brian Decosta <
> briandecosta38305@xxxxxxxxx> wrote:
>
>
> Does anyone on the list have any SP2550-2 Eurofarad 3.75 uF 580V RMS caps
> that they are not using? If so I need about 10 of them.
>
> Thanks
>
> Brian
>
> Sent from my iPhone
> _______________________________________________
> 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: 18
Date: Tue, 27 Aug 2019 13:33:18 +0000
From: Ronald Reeland <ronreeland@xxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>, Yurtle Turtle
<yurtle_t@xxxxxxxxx>
Subject: Re: [TCML] Need capacitors
Message-ID:
<DM5PR15MB1803A5391D353F14B6D781A0C3A00@xxxxxxxxxxxxxxxxxxxxxxxxxxx.outlook.
com>
Content-Type: text/plain; charset="us-ascii"
Eurofarad is the name of a capacitor manufacturer locate in France. Here is
a link to their website: https://supplyfx.com/company/8987-eurofarad
The name was new to me for sure.
Ron
________________________________
From: Tesla <tesla-bounces@xxxxxxxxxx> on behalf of Yurtle Turtle via Tesla
<tesla@xxxxxxxxxx>
Sent: Tuesday, August 27, 2019 6:26 AM
To: Tesla Mailing List <Tesla@xxxxxxxxxx>; Tesla Coil Mailing List
<tesla@xxxxxxxxxx>
Subject: Re: [TCML] Need capacitors
"Eurofarad". Is that a thing, or just a joke/pun/??
On Tuesday, August 27, 2019, 7:20:59 AM EDT, Brian Decosta
<briandecosta38305@xxxxxxxxx> wrote:
Does anyone on the list have any SP2550-2 Eurofarad 3.75 uF 580V RMS caps
that they are not using? If so I need about 10 of them.
Thanks
Brian
Sent from my iPhone
_______________________________________________
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: 19
Date: Tue, 27 Aug 2019 16:12:19 +0000 (UTC)
From: Allen Bishop <co60bishop@xxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: [TCML] Need capacitors
Message-ID: <741774116.1970534.1566922339007@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8
Whatever for? Those are starting motor caps and surely would never work as a
capacitor string for the primary of a Tesla coil.
Allen BishopColorado Springs
-----Original Message-----
From: Brian Decosta <briandecosta38305@xxxxxxxxx>
To: Tesla Mailing List <Tesla@xxxxxxxxxx>
Sent: Tue, Aug 27, 2019 5:20 am
Subject: [TCML] Need capacitors
Does anyone on the list have any SP2550-2 Eurofarad 3.75 uF 580V RMS caps
that they are not using?? If so I need about 10 of them.
Thanks
Brian
Sent from my iPhone
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla
------------------------------
Subject: Digest Footer
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla
------------------------------
End of Tesla Digest, Vol 141, Issue 2
*************************************
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla
