Re: Message 2 — Help Needed To Build A Tesla Coil (Pranab Lodh)
You might want to check my Tesla Coil Webpage at http://twotowers.com/tesla/tessie_1_tesla_coil.html
On that page I lay out the entire process I discovered and followed, which in a few months time rendered a really sweet tesla coil that gives off 1 meter discharges. I followed tips I received from Chis Boden (The Geek Group), Instructables.com, from pupman.com and from a few other online resources. You will notice that I make use of a 15,000V 60mA GFI free NST. Feel free to use what ever information you find there.
Peace
On Feb 15, 2016, at 2:58 PM, tesla-request@xxxxxxxxxx wrote:
> Send Tesla mailing list submissions to
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> Today's Topics:
>
> 1. Re: Marx (=?utf-8?B?bXN3ZWVuZXkyM0BnbWFpbC5jb20=?=)
> 2. Help Needed To Build A Tesla Coil (Pranab Lodh)
> 3. Re: Marx (Ed)
> 4. Re: Marx (doug)
> 5. Re: Marx (doug)
> 6. Re: Marx (Ed)
> 7. Re: Marx (doug)
> 8. Re: Marx (wt5y)
> 9. Re: Marx (Doug)
> 10. Re: Marx (Ed)
> 11. Re: Marx (homerlea@xxxxxxx)
> 12. Re: Marx (David Speck)
> 13. Re: Marx (homerlea@xxxxxxx)
> 14. Re: Marx (Carl Noggle)
> 15. Re: Marx (Ed)
> 16. Re: Marx (doug)
> 17. Re: Marx (jimlux)
> 18. Re: Marx (Futuret)
> 19. Marx (doug)
> 20. Re: Marx (homerlea@xxxxxxx)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 12 Feb 2016 21:36:54 -0600
> From: "=?utf-8?B?bXN3ZWVuZXkyM0BnbWFpbC5jb20=?="
> <msweeney23@xxxxxxxxx>
> To: "=?utf-8?B?VGVzbGEgQ29pbCBNYWlsaW5nIExpc3Q=?=" <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <56bea4d8.2e21320a.cdee6.6272@xxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
>
> Beautiful work as usual Doug.
>
> ----- Reply message -----
> From: "doug" <doug11642@xxxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Subject: [TCML] Marx
> Date: Fri, Feb 12, 2016 12:54 PM
>
> I just finished this little Marx. https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
> Doug
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
> ------------------------------
>
> Message: 2
> Date: Sat, 13 Feb 2016 09:13:31 +0530
> From: Pranab Lodh <bumba007lodh@xxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: [TCML] Help Needed To Build A Tesla Coil
> Message-ID:
> <CAJP6YpYTvSDMYtnVRvRT18Mkqs7dwQVE-JW7CTrYHGdQPzWiYg@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=UTF-8
>
> To
> Respected Sir/Madam,
>
>
> I have a plan to build a Tesla coil but I have a little experience in this
> field. Last year I built a smaller one by using a 5KV NST and bottle
> capacitor but I was not satisfied by the performance so now I am planning
> to build a bigger one.
>
> For this purpose I have bought a 15KV 30mA NST, a secondary of 2.5 inch
> diameter and 16 inch tall and a toroid capacitance of 15pF. But I am still
> confused for the capacitor, I don't know which type of capacitor should be
> used and what should be the voltage rating of the capacitor bank.
>
> So I am requesting to you all please provide me all calculation and
> schematic including filter circuit and others. I don't want to use rotary
> spark gap because it will overflow my budget.
>
>
> Thanking You
> Pranab Lodh
> India.
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 13 Feb 2016 00:52:16 -0800
> From: Ed <evp@xxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <56BEEEBF.5080300@xxxxxxxxxxx>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Beautiful! Resistor and capacitor details? Where did you get the brass
> balls?
>
> Thanks,
>
> Ed
>
> On 2/12/2016 10:54 AM, doug wrote:
>> I just finished this little Marx. https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>> Doug
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 13 Feb 2016 08:19:21 -0500
> From: "doug" <doug11642@xxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <EA668EA2C6884715A48BB08406E9EDD5@dougPCPC>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Thank you Ed; Brass balls are from MC MASTER CARR, Caps are 15KV/1nf [China]
> Resistors [Thanks to advice from Bert H.] are from here >>
> http://www.digikey.com/product-detail/en/VR68000002203JAC00/VR68J220KCT-ND/1995214
> Doug
> -----Original Message-----
> From: Ed
> Sent: Saturday, February 13, 2016 3:52 AM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Marx
>
> Beautiful! Resistor and capacitor details? Where did you get the brass
> balls?
>
> Thanks,
>
> Ed
>
> On 2/12/2016 10:54 AM, doug wrote:
>> I just finished this little Marx.
>> https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>> Doug
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sat, 13 Feb 2016 08:24:22 -0500
> From: "doug" <doug11642@xxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <DB0533ED9F9E497B9508EC1392F9C222@dougPCPC>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Thanks Matt; Construction is almost solder less, only soldering was for the
> Resistor strings.
> Doug
>
> -----Original Message-----
> From: msweeney23@xxxxxxxxx
> Sent: Friday, February 12, 2016 10:36 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Marx
>
> Beautiful work as usual Doug.
>
> ----- Reply message -----
> From: "doug" <doug11642@xxxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Subject: [TCML] Marx
> Date: Fri, Feb 12, 2016 12:54 PM
>
> I just finished this little Marx.
> https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
> Doug
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
>
>
> ------------------------------
>
> Message: 6
> Date: Sat, 13 Feb 2016 10:42:01 -0800
> From: Ed <evp@xxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <56BF78F9.2000804@xxxxxxxxxxx>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Got it all. Questions:
>
> 1. Does the main gap fire on every pulse? Doesn't look that way in the
> playback but may be some sort of strobe effect?
>
> 2. What is the charger supply voltage?
>
> 3. Your main gap appears to have a spacing of the order of 2-1/2". What
> is the maximum spark length you can get when you open it up.
>
> 4. What resistor values are you using? Can't read color code.
>
> Thanks,
>
> Ed
>
> On 2/13/2016 5:19 AM, doug wrote:
>> Thank you Ed; Brass balls are from MC MASTER CARR, Caps are 15KV/1nf
>> [China] Resistors [Thanks to advice from Bert H.] are from here >>
>> http://www.digikey.com/product-detail/en/VR68000002203JAC00/VR68J220KCT-ND/1995214
>>
>> Doug
>> -----Original Message----- From: Ed
>> Sent: Saturday, February 13, 2016 3:52 AM
>> To: Tesla Coil Mailing List
>> Subject: Re: [TCML] Marx
>>
>> Beautiful! Resistor and capacitor details? Where did you get the brass
>> balls?
>>
>> Thanks,
>>
>> Ed
>>
>> On 2/12/2016 10:54 AM, doug wrote:
>>> I just finished this little Marx.
>>> https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>>> Doug
>>> _______________________________________________
>>> Tesla mailing list
>>> Tesla@xxxxxxxxxx
>>> http://www.pupman.com/mailman/listinfo/tesla
>>>
>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Sat, 13 Feb 2016 14:36:25 -0500
> From: "doug" <doug11642@xxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <50213BCAAD3D43178F7FA01C15F2451B@dougPCPC>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Hi Ed;
>
>> 1. Does the main gap fire on every pulse? Doesn't look that way in the
> playback but may be some sort of strobe effect?
> YES!
>> 2. What is the charger supply voltage?
> 20KV
>
>> 3. Your main gap appears to have a spacing of the order of 2-1/2". What
> is the maximum spark length you can get when you open it up.
> 4 inches plus
>> 4. What resistor values are you using? Can't read color code.
>
> [This is as per Bert Hickmans recommendation,] value (per stage) of 200k to
> 1
> Meg, made up of a series string of HV Pulse-rated resistors such as 1W
> Vishay VR68 resistors. These resistors are capable of handling HV pulses
> of up to 10 kV, so a string of two in series for each stage should do
> the trick. I found that Digikey has 220k 1W VR68's in stock for
> small-quantity purchase at a reasonable price:
> http://www.digikey.com/product-detail/en/VR68000002203JAC00/VR68J220KCT-ND/1995214
> Doug
>
>
>
> -----Original Message-----
> From: Ed
> Sent: Saturday, February 13, 2016 1:42 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Marx
>
> Got it all. Questions:
>
> 1. Does the main gap fire on every pulse? Doesn't look that way in the
> playback but may be some sort of strobe effect?
>
> 2. What is the charger supply voltage?
>
> 3. Your main gap appears to have a spacing of the order of 2-1/2". What
> is the maximum spark length you can get when you open it up.
>
> 4. What resistor values are you using? Can't read color code.
>
> Thanks,
>
> Ed
>
> On 2/13/2016 5:19 AM, doug wrote:
>> Thank you Ed; Brass balls are from MC MASTER CARR, Caps are 15KV/1nf
>> [China] Resistors [Thanks to advice from Bert H.] are from here >>
>> http://www.digikey.com/product-detail/en/VR68000002203JAC00/VR68J220KCT-ND/1995214
>> Doug
>> -----Original Message----- From: Ed
>> Sent: Saturday, February 13, 2016 3:52 AM
>> To: Tesla Coil Mailing List
>> Subject: Re: [TCML] Marx
>>
>> Beautiful! Resistor and capacitor details? Where did you get the brass
>> balls?
>>
>> Thanks,
>>
>> Ed
>>
>> On 2/12/2016 10:54 AM, doug wrote:
>>> I just finished this little Marx.
>>> https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>>> Doug
>>> _______________________________________________
>>> Tesla mailing list
>>> Tesla@xxxxxxxxxx
>>> http://www.pupman.com/mailman/listinfo/tesla
>>>
>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
>
>
> ------------------------------
>
> Message: 8
> Date: Sat, 13 Feb 2016 16:20:47 -0600
> From: wt5y <wt5y@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <3en0c3flnp0gpp0dp6jp9fwc.1455402047622@xxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
>
>
>
> Do you have a schematic or list of parts used?
> John cooper
>
>
> Sent from my Samsung GALAXY S5?, a Cricket 4G LTE smartphone
>
> -------- Original message --------
> From: Ed <evp@xxxxxxxxxxx>
> Date: 02/13/2016 02:52 (GMT-06:00)
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
>
> Beautiful!? Resistor and capacitor details?? Where did you get the brass
> balls?
>
> Thanks,
>
> Ed
>
> On 2/12/2016 10:54 AM, doug wrote:
>> I just finished this little Marx.? https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>> Doug
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
> ------------------------------
>
> Message: 9
> Date: Sat, 13 Feb 2016 19:13:49 -0500
> From: Doug <doug11642@xxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <56BFC6BD.4070104@xxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Hi John; I have listed the components of my Marx In previous emails. This
> site has a schematic for a simple Marx, also there is much more info on
> line. http://www.instructables.com/id/Build-a-simple-Marx-Generator/
> Doug
>
>
> On 2/13/2016 5:20 PM, wt5y wrote:
>>
>> Do you have a schematic or list of parts used?
>> John cooper
>>
>>
>> Sent from my Samsung GALAXY S5?, a Cricket 4G LTE smartphone
>>
>> -------- Original message --------
>> From: Ed <evp@xxxxxxxxxxx>
>> Date: 02/13/2016 02:52 (GMT-06:00)
>> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
>> Subject: Re: [TCML] Marx
>>
>> Beautiful! Resistor and capacitor details? Where did you get the brass
>> balls?
>>
>> Thanks,
>>
>> Ed
>>
>> On 2/12/2016 10:54 AM, doug wrote:
>>> I just finished this little Marx. https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>>> Doug
>>> _______________________________________________
>>> Tesla mailing list
>>> Tesla@xxxxxxxxxx
>>> http://www.pupman.com/mailman/listinfo/tesla
>>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>
>
>
> ------------------------------
>
> Message: 10
> Date: Sat, 13 Feb 2016 16:27:31 -0800
> From: Ed <evp@xxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <56BFC9F3.60405@xxxxxxxxxxx>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Got it all. That must make quite a crack when it fires!!!
>
> On 2/13/2016 11:36 AM, doug wrote:
>> Hi Ed;
>>
>>> 1. Does the main gap fire on every pulse? Doesn't look that way in the
>> playback but may be some sort of strobe effect?
>> YES!
>>> 2. What is the charger supply voltage?
>> 20KV
>>
>>> 3. Your main gap appears to have a spacing of the order of 2-1/2". What
>> is the maximum spark length you can get when you open it up.
>> 4 inches plus
>>> 4. What resistor values are you using? Can't read color code.
>>
>> [This is as per Bert Hickmans recommendation,] value (per stage) of
>> 200k to 1
>> Meg, made up of a series string of HV Pulse-rated resistors such as 1W
>> Vishay VR68 resistors. These resistors are capable of handling HV pulses
>> of up to 10 kV, so a string of two in series for each stage should do
>> the trick. I found that Digikey has 220k 1W VR68's in stock for
>> small-quantity purchase at a reasonable price:
>> http://www.digikey.com/product-detail/en/VR68000002203JAC00/VR68J220KCT-ND/1995214
>>
>> Doug
>>
>>
>>
>> -----Original Message----- From: Ed
>> Sent: Saturday, February 13, 2016 1:42 PM
>> To: Tesla Coil Mailing List
>> Subject: Re: [TCML] Marx
>>
>> Got it all. Questions:
>>
>> 1. Does the main gap fire on every pulse? Doesn't look that way in the
>> playback but may be some sort of strobe effect?
>>
>> 2. What is the charger supply voltage?
>>
>> 3. Your main gap appears to have a spacing of the order of 2-1/2". What
>> is the maximum spark length you can get when you open it up.
>>
>> 4. What resistor values are you using? Can't read color code.
>>
>> Thanks,
>>
>> Ed
>>
>> On 2/13/2016 5:19 AM, doug wrote:
>>> Thank you Ed; Brass balls are from MC MASTER CARR, Caps are 15KV/1nf
>>> [China] Resistors [Thanks to advice from Bert H.] are from here >>
>>> http://www.digikey.com/product-detail/en/VR68000002203JAC00/VR68J220KCT-ND/1995214
>>>
>>> Doug
>>> -----Original Message----- From: Ed
>>> Sent: Saturday, February 13, 2016 3:52 AM
>>> To: Tesla Coil Mailing List
>>> Subject: Re: [TCML] Marx
>>>
>>> Beautiful! Resistor and capacitor details? Where did you get the brass
>>> balls?
>>>
>>> Thanks,
>>>
>>> Ed
>>>
>>> On 2/12/2016 10:54 AM, doug wrote:
>>>> I just finished this little Marx.
>>>> https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>>>> Doug
>>>> _______________________________________________
>>>> Tesla mailing list
>>>> Tesla@xxxxxxxxxx
>>>> http://www.pupman.com/mailman/listinfo/tesla
>>>>
>>>
>>> _______________________________________________
>>> Tesla mailing list
>>> Tesla@xxxxxxxxxx
>>> http://www.pupman.com/mailman/listinfo/tesla
>>> _______________________________________________
>>> Tesla mailing list
>>> Tesla@xxxxxxxxxx
>>> http://www.pupman.com/mailman/listinfo/tesla
>>>
>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
>
>
> ------------------------------
>
> Message: 11
> Date: Sun, 14 Feb 2016 00:31:18 -0500
> From: homerlea@xxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: Re: [TCML] Marx
> Message-ID: <152de42ff41-30a3-11fd7@xxxxxxxxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
>
>
> Does anyone know if I can power a Tesla coil using thyratrons to pulse power from a 20 kvdc power supply/ I just scored some 25 kv thyratrons.
> Jim Heagy
>
>
> -----Original Message-----
>
>
>
> ------------------------------
>
> Message: 12
> Date: Sun, 14 Feb 2016 10:06:35 -0500
> From: David Speck <Dave@xxxxxxxxxxxxxxxx>
> To: homerlea@xxxxxxx, Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <56C097FB.8050607@xxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Jim,
>
> Richard Hull built a TC based on a hydrogen thyratron a number of years
> ago. It sorta worked, but was not spectacular.
>
> Thyratrons are not well suited to TC use, because they do not tolerate
> reverse direction currents well at all, and degrade quickly. The
> oscillating currents in the TC tank circuit travel in both directions
> during the ringdown, and the reverse phase damages the tubes.
>
> ISTR that someone tried to use two thyratrons in antiparallel, but
> gating them was non-trivial. Basically, a lot of work to make an
> inappropriate device perform poorly.
>
> Dave
>
> On 2/14/2016 12:31 AM, homerlea--- via Tesla wrote:
>> Does anyone know if I can power a Tesla coil using thyratrons to pulse power from a 20 kvdc power supply/ I just scored some 25 kv thyratrons.
>> Jim Heagy
>
>
>
> ------------------------------
>
> Message: 13
> Date: Sun, 14 Feb 2016 11:50:30 -0500
> From: homerlea@xxxxxxx
> To: Dave@xxxxxxxxxxxxxxxx, tesla@xxxxxxxxxx
> Subject: Re: [TCML] Marx
> Message-ID: <152e0b0d071-65bd-1416e@xxxxxxxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
>
>
>
> My problem is that I am a chemist instead of an electrical engineer. I took an electronics class at the local city college but everything was 5 volts... very boring. The only things I ever successfully built were a 1/2 wave Tesla coil and a giant Cockroft Walton voltage multiplier that put out a 10 inch arc that sounded like a shotgun blast. I was going to make an accelerator haha, this was almost 60 years ago. Good thing I didn't get past the power supply... never thought of the HV X-rays it would produce. Any way I wasn't thinking of having any reverse current go through the thyratrons; I thought I could just put a Tesla primary in series with a small uf capacitor, charge the capacitor with pulses from the thyratron and a large capacitor and add a pulse every time the ringdown dropped the voltage on the smaller cap. Fantasy? I bought some surplus equipment from LBNL's advanced test accelerator and got a bunch of large CX1538 thyratrons.
> Jim
>
>
> -----Original Message-----
> From: David Speck <Dave@xxxxxxxxxxxxxxxx>
> To: homerlea <homerlea@xxxxxxx>; Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Sent: Sun, Feb 14, 2016 7:06 am
> Subject: Re: [TCML] Marx
>
> Jim,
>
> Richard Hull built a TC based on a hydrogen thyratron a number of years
> ago. It sorta worked, but was not spectacular.
>
> Thyratrons are not well suited to TC use, because they do not tolerate
> reverse direction currents well at all, and degrade quickly. The
> oscillating currents in the TC tank circuit travel in both directions
> during the ringdown, and the reverse phase damages the tubes.
>
> ISTR that someone tried to use two thyratrons in antiparallel, but
> gating them was non-trivial. Basically, a lot of work to make an
> inappropriate device perform poorly.
>
> Dave
>
> On 2/14/2016 12:31 AM, homerlea--- via Tesla wrote:
>> Does anyone know if I can power a Tesla coil using thyratrons to pulse power from a 20 kvdc power supply/ I just scored some 25 kv thyratrons.
>> Jim Heagy
>
>
>
>
>
> ------------------------------
>
> Message: 14
> Date: Sun, 14 Feb 2016 10:52:10 -0700
> From: Carl Noggle <cn8@xxxxxxx>
> To: homerlea@xxxxxxx, Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <56C0BECA.9050801@xxxxxxx>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> You probably can, depending on the type of thyratron. If they are
> hollow anode, they should work well, since they conduct in both
> directions after they are triggered. Otherwise, you will have to put in
> a reverse diode. I don't remember how fast most of them deionize. That
> could be a problem. It would be cool if they have glass envelopes so
> you could see the pretty colors.
>
> If (not likely) they are grounded-grid thyratrons, they would work well,
> although they need a pretty heavy trigger pulse.
>
> Say I, try them. If they don't work, you can always go back 100 years
> and stick in a spark gap.
>
> What are the part numbers?
>
> ---Carl
>
>
>
>
>
>
> On 2/13/2016 10:31 PM, homerlea--- via Tesla wrote:
>> Does anyone know if I can power a Tesla coil using thyratrons to pulse power from a 20 kvdc power supply/ I just scored some 25 kv thyratrons.
>> Jim Heagy
>>
>>
>> -----Original Message-----
>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
>
>
> ------------------------------
>
> Message: 15
> Date: Sun, 14 Feb 2016 12:37:23 -0800
> From: Ed <evp@xxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <56C0E583.1080906@xxxxxxxxxxx>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Couple of more questions for you.
>
> What style capacitors did you use and where did you get them? I didn't
> find any 15 kV ceramics on my first glance at Mouser or DigiKey but I
> tend to be blind that way. I'm getting the hots to build a bigger one
> with more sections and bigger capacitors. I'm a 'big bang man'!
>
> What is the intriguing looking 'finned thing' with big brass balls in
> the background? Worth a story in itself.
>
> A long time ago I built a very small Marx generator excited by the
> rectified output of a piezoelectric ceramic HV generator out of a fire
> starter. I was able to get about half inch sparks some of the time
> after clicking enough but usually got about 1/4", not much longer than
> from the generator but very much fatter and louder. If I could find the
> thing I'd send a pix.
>
> Ed
>
> On 2/12/2016 10:54 AM, doug wrote:
>> I just finished this little Marx. https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>> Doug
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
>
>
> ------------------------------
>
> Message: 16
> Date: Sun, 14 Feb 2016 18:44:27 -0500
> From: "doug" <doug11642@xxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Subject: Re: [TCML] Marx
> Message-ID: <630B3DA818BC4C82968805A9CF905292@dougPCPC>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Hi Ed;I will help you all I can, but a lot of the info you will need for a
> bigger Marx is over my skillset. I believe as you go bigger on your Caps you
> may need higher rated Resistors.
> Ebay has lots of ceramic disc Caps of different ratings, but they are not
> the only type that will work for a Marx.
> I had to ask a friend's advice on the resistors I should use considering my
> 15KV caps because I had no idea! I will include some links to Marx sites
> with this.
> http://www.xn--kronjger-4za.de/hv/hv/pro/marx/index.html
> https://www.youtube.com/watch?v=ojcUpDwt6FQ
> The finned things are some homemade TC top-loads I experimented, with seen
> here.
> https://www.youtube.com/watch?v=HuBA8fo_KyI
> Doug
>
> -----Original Message-----
> From: Ed
> Sent: Sunday, February 14, 2016 3:37 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Marx
>
> Couple of more questions for you.
>
> What style capacitors did you use and where did you get them? I didn't
> find any 15 kV ceramics on my first glance at Mouser or DigiKey but I
> tend to be blind that way. I'm getting the hots to build a bigger one
> with more sections and bigger capacitors. I'm a 'big bang man'!
>
> What is the intriguing looking 'finned thing' with big brass balls in
> the background? Worth a story in itself.
>
> A long time ago I built a very small Marx generator excited by the
> rectified output of a piezoelectric ceramic HV generator out of a fire
> starter. I was able to get about half inch sparks some of the time
> after clicking enough but usually got about 1/4", not much longer than
> from the generator but very much fatter and louder. If I could find the
> thing I'd send a pix.
>
> Ed
>
> On 2/12/2016 10:54 AM, doug wrote:
>> I just finished this little Marx.
>> https://www.youtube.com/watch?v=f6gEAlC1y0c&feature=youtu.be
>> Doug
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
>
>
> ------------------------------
>
> Message: 17
> Date: Mon, 15 Feb 2016 05:02:13 -0800
> From: jimlux <jimlux@xxxxxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Re: [TCML] Marx
> Message-ID: <56C1CC55.8050805@xxxxxxxxxxxxx>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> On 2/13/16 9:31 PM, homerlea--- via Tesla wrote:
>>
>> Does anyone know if I can power a Tesla coil using thyratrons to
>> pulse power from a 20 kvdc power supply/ I just scored some 25 kv
>> thyratrons.
>
> I believe that Richard Hull may have built a TC with thyratrons.
>
>
> ------------------------------
>
> Message: 18
> Date: Mon, 15 Feb 2016 08:27:38 -0500
> From: Futuret <futuret@xxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Re: [TCML] Marx
> Message-ID: <152e51d734d-52a1-395@xxxxxxxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
>
> Richard Hull's TC used a single hydrogen thyratron which was
> was set to conduct for 1/2 of an RF cycle. It was a magnifier
> TC design with tight driver coupling, but 1/2 of an RF cycle
> was not really enough to give full power transfer so this
> held back its performance. He was considering building
> a design with back to back thyratrons but never actually
> built it. I think he submitted an article describing the TC to the
> TCBA Newsletter. This can probably be found at
> Tesla Universe.
>
> https://teslauniverse.com/resources/builders/tcba-newsletter
>
> John
>
>
>
>
>
>
>
> -----Original Message-----
> From: jimlux <jimlux@xxxxxxxxxxxxx>
> To: tesla <tesla@xxxxxxxxxx>
> Sent: Mon, Feb 15, 2016 8:04 am
> Subject: Re: [TCML] Marx
>
> On 2/13/16 9:31 PM, homerlea--- via Tesla wrote:
>>
>> Does anyone know if I can power a Tesla coil using thyratrons to
>> pulse power from a 20 kvdc power supply/ I just scored some 25 kv
>> thyratrons.
>
> I believe that Richard Hull may have built a TC with thyratrons.
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
>
>
> ------------------------------
>
> Message: 19
> Date: Mon, 15 Feb 2016 11:49:14 -0500
> From: "doug" <doug11642@xxxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Subject: [TCML] Marx
> Message-ID: <F9246A3071F34417B58A01C960BC7C86@dougPCPC>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Update on my little Marx. https://youtu.be/Qjw_EapXRAA
> Doug
>
> ------------------------------
>
> Message: 20
> Date: Mon, 15 Feb 2016 15:16:20 -0500
> From: homerlea@xxxxxxx
> To: futuret@xxxxxxx, tesla@xxxxxxxxxx
> Subject: Re: [TCML] Marx
> Message-ID: <152e6939eab-6960-1b2f@xxxxxxxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
>
>
> Thanks, I will check it. I have no shortage of thyratrons.
> Jim
>
>
> -----Original Message-----
> From: Futuret via Tesla <tesla@xxxxxxxxxx>
> To: tesla <tesla@xxxxxxxxxx>
> Sent: Mon, Feb 15, 2016 8:30 am
> Subject: Re: [TCML] Marx
>
> Richard Hull's TC used a single hydrogen thyratron which was
> was set to conduct for 1/2 of an RF cycle. It was a magnifier
> TC design with tight driver coupling, but 1/2 of an RF cycle
> was not really enough to give full power transfer so this
> held back its performance. He was considering building
> a design with back to back thyratrons but never actually
> built it. I think he submitted an article describing the TC to the
> TCBA Newsletter. This can probably be found at
> Tesla Universe.
>
> https://teslauniverse.com/resources/builders/tcba-newsletter
>
> John
>
>
>
>
>
>
>
> -----Original Message-----
> From: jimlux <jimlux@xxxxxxxxxxxxx>
> To: tesla <tesla@xxxxxxxxxx>
> Sent: Mon, Feb 15, 2016 8:04 am
> Subject: Re: [TCML] Marx
>
> On 2/13/16 9:31 PM, homerlea--- via Tesla wrote:
>>
>> Does anyone know if I can power a Tesla coil using thyratrons to
>> pulse power from a 20 kvdc power supply/ I just scored some 25 kv
>> thyratrons.
>
> I believe that Richard Hull may have built a TC with thyratrons.
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
>
> ------------------------------
>
> End of Tesla Digest, Vol 100, Issue 3
> *************************************
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