Author Topic: What is the advantage  (Read 3286 times)

Online thedoc298

  • High Voltage Engineer
  • ****
  • Posts: 211
  • Karma: +2/-0
    • View Profile
What is the advantage
« on: July 28, 2019, 10:23:33 PM »
I see many coils with 2 toroids, one larger and one small. What is the advantage of this. Thanks again.

Offline MRMILSTAR

  • High Voltage Senior
  • *****
  • Posts: 549
  • Karma: +20/-0
  • Cedar Rapids, Iowa
    • View Profile
Re: What is the advantage
« Reply #1 on: July 29, 2019, 03:41:48 PM »
There are two reasons. Most of the time, someone is just trying to add more capacitance to the top load without going to the trouble of building a single larger toroid. Another possible reason for adding a smaller toroid below a larger one is to bring the electromagnetic  field closer to the top of the secondary coil to provide protection against streamers being emitted from the top of the secondary coil windings.
« Last Edit: December 14, 2019, 11:45:41 PM by MRMILSTAR »
Steve White
Cedar Rapids, Iowa
Retired electrical engineer

Online thedoc298

  • High Voltage Engineer
  • ****
  • Posts: 211
  • Karma: +2/-0
    • View Profile
Re: What is the advantage
« Reply #2 on: July 30, 2019, 12:13:47 AM »
That sounds reasonable. Thanks again.

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2278
  • Karma: +72/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: What is the advantage
« Reply #3 on: July 30, 2019, 07:40:44 PM »
A third reason is also to raise up the top toroid, to gain more distance between the toroid from where the streamers come out and the primary coil/strike rail/ground, a smaller diameter near the top of the secondary coil will also have a stronger electrical field that helps prevent corona discharge and streamers from the top turn of the secondary coil if there is a too large distance from that and topload.
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Online thedoc298

  • High Voltage Engineer
  • ****
  • Posts: 211
  • Karma: +2/-0
    • View Profile
Re: What is the advantage
« Reply #4 on: July 31, 2019, 02:28:41 AM »
A third reason is also to raise up the top toroid, to gain more distance between the toroid from where the streamers come out and the primary coil/strike rail/ground, a smaller diameter near the top of the secondary coil will also have a stronger electrical field that helps prevent corona discharge and streamers from the top turn of the secondary coil if there is a too large distance from that and topload.



Thanks for another good tip, takes long time to fully understand all the in's and out's. Would it be like if at the top of the secondary I had a 10 inch giraffe neck that it would be to my advantage to have a smaller turtle neck below the bigh toroid on top of the 10 inch gap for the reasons you stated. Thanks.
« Last Edit: August 05, 2019, 08:42:45 AM by Mads Barnkob »

Offline MRMILSTAR

  • High Voltage Senior
  • *****
  • Posts: 549
  • Karma: +20/-0
  • Cedar Rapids, Iowa
    • View Profile
Re: What is the advantage
« Reply #5 on: August 01, 2019, 06:00:24 PM »
Most people with SGTCs just use a single toroid mounted at the proper height to shield the top turns of the secondary from corona or sparks. My 8.6" pig-powered coil just has a single 30" x 9" aluminum toroid with no problem.
Steve White
Cedar Rapids, Iowa
Retired electrical engineer

Offline MRMILSTAR

  • High Voltage Senior
  • *****
  • Posts: 549
  • Karma: +20/-0
  • Cedar Rapids, Iowa
    • View Profile
Re: What is the advantage
« Reply #6 on: September 26, 2019, 09:15:36 PM »
JAVATC allows for multiple top loads in the input. You can try your different ideas and see what they do.
Steve White
Cedar Rapids, Iowa
Retired electrical engineer

High Voltage Forum

Re: What is the advantage
« Reply #6 on: September 26, 2019, 09:15:36 PM »

 


* Recent Topics and Posts

post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
Today at 05:46:07 AM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
MRMILSTAR
Today at 05:18:31 AM
post Re: IKY150N65EH7, is it good for DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
Today at 04:34:52 AM
post Re: How to get a GE Yokogawa AB40 Sync Scope to rotate without a powerplant.
[Laboratories, Equipment and Tools]
klugesmith
Today at 04:11:53 AM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
Today at 04:02:44 AM
post Re: 100kHz CM300 gate resistor choice
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
Today at 03:35:52 AM
post Re: How to get a GE Yokogawa AB40 Sync Scope to rotate without a powerplant.
[Laboratories, Equipment and Tools]
MRMILSTAR
April 17, 2024, 11:54:05 PM
post 100kHz CM300 gate resistor choice
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
April 17, 2024, 11:37:16 PM
post Re: Has anyone tried to build a TMT (extra coil) Tesla coil?
[General Chat]
Michelle_
April 17, 2024, 02:29:30 AM
post Re: Has anyone tried to build a TMT (extra coil) Tesla coil?
[General Chat]
MRMILSTAR
April 16, 2024, 11:56:12 PM
post Re: How to get a GE Yokogawa AB40 Sync Scope to rotate without a powerplant.
[Laboratories, Equipment and Tools]
klugesmith
April 16, 2024, 11:46:57 PM
post Re: How to get a GE Yokogawa AB40 Sync Scope to rotate without a powerplant.
[Laboratories, Equipment and Tools]
Bobakman
April 16, 2024, 10:40:11 PM
post Has anyone tried to build a TMT (extra coil) Tesla coil?
[General Chat]
Michelle_
April 16, 2024, 09:21:39 PM
post Re: Medium Drsstc question
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
April 16, 2024, 08:04:16 PM
post Re: First DRSSTC SKM100
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
April 16, 2024, 06:48:05 PM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
Michelle_
April 16, 2024, 06:18:40 PM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
April 16, 2024, 06:14:53 PM
post Re: 3D printed mini-slayer: world's weakest tesla coil
[Solid State Tesla Coils (SSTC)]
unrealcrafter2
April 16, 2024, 05:44:44 PM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
MRMILSTAR
April 16, 2024, 03:12:12 PM
post Re: Drsstc voltage spike question
[Dual Resonant Solid State Tesla coils (DRSSTC)]
unrealcrafter2
April 16, 2024, 02:28:01 PM
post Re: First DRSSTC SKM100
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Saattvik24
April 16, 2024, 01:56:26 PM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
April 16, 2024, 06:50:47 AM
post Re: IKY150N65EH7, is it good for DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Anders Mikkelsen
April 16, 2024, 04:57:47 AM
post Re: IKY150N65EH7, is it good for DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ethanwu0131
April 16, 2024, 03:40:53 AM
post Re: First DRSSTC SKM100
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
April 16, 2024, 01:31:17 AM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
Michelle_
April 15, 2024, 11:19:52 PM
post 3D printed mini-slayer: world's weakest tesla coil
[Solid State Tesla Coils (SSTC)]
Michelle_
April 15, 2024, 11:10:19 PM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
alan sailer
April 15, 2024, 11:04:19 PM
post Re: Ignitron trigger drive ideas?
[Capacitor Banks]
Twospoons
April 15, 2024, 11:02:05 PM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
Michelle_
April 15, 2024, 10:57:59 PM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
Michelle_
April 15, 2024, 10:55:46 PM
post Re: Return of Electronics Flea Market in "Silicon Valley"
[Sell / Buy / Trade]
klugesmith
April 15, 2024, 10:37:32 PM
post Re: First DRSSTC SKM100
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Saattvik24
April 15, 2024, 10:05:00 PM
post Re: How to get a GE Yokogawa AB40 Sync Scope to rotate without a powerplant.
[Laboratories, Equipment and Tools]
MRMILSTAR
April 15, 2024, 09:28:50 PM
post Ignitron trigger drive ideas?
[Capacitor Banks]
klugesmith
April 15, 2024, 09:06:42 PM
post Re: First DRSSTC SKM100
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
April 15, 2024, 08:46:32 PM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
Benbmw
April 15, 2024, 08:38:39 PM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
sky-guided
April 15, 2024, 08:23:40 PM
post How to get a GE Yokogawa AB40 Sync Scope to rotate without a powerplant.
[Laboratories, Equipment and Tools]
Bobakman
April 15, 2024, 06:43:23 PM
post Re: First DRSSTC SKM100
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
April 15, 2024, 06:29:10 AM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
April 15, 2024, 05:21:53 AM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
April 15, 2024, 05:15:33 AM
post Re: First DRSSTC SKM100
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
April 15, 2024, 04:07:54 AM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
davekni
April 15, 2024, 03:49:03 AM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
alan sailer
April 14, 2024, 09:46:30 PM
post Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
April 14, 2024, 07:31:00 PM
post Re: First DRSSTC SKM100
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Saattvik24
April 14, 2024, 02:26:19 PM
post Re: mg75q2ys40 IGBT
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
April 14, 2024, 07:20:54 AM
post Re: IKY150N65EH7, is it good for DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
April 14, 2024, 07:18:20 AM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
Michelle_
April 13, 2024, 06:46:40 AM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
Michelle_
April 13, 2024, 04:18:42 AM
post Re: Upper and Lower Explosive Limits on Confined Flammable Vapors at -79 C.
[General Chat]
alan sailer
April 13, 2024, 03:24:20 AM
post Re: Game changing tesla coil secondary winding suggestions
[General Chat]
alan sailer
April 13, 2024, 03:20:46 AM
post Game changing tesla coil secondary winding suggestions
[General Chat]
Michelle_
April 13, 2024, 03:13:22 AM
post Re: Capacitor Blowout
[Sell / Buy / Trade]
lbattraw
April 12, 2024, 09:14:58 PM
post mg75q2ys40 IGBT
[Dual Resonant Solid State Tesla coils (DRSSTC)]
thedark
April 12, 2024, 08:40:18 PM
post Re: UD 2.7 OCD LED stays on, no output during inital test
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
April 12, 2024, 07:20:30 PM
post Re: Mosfet Buffer Stage Questions
[Beginners]
davekni
April 12, 2024, 07:12:43 PM
post IKY150N65EH7, is it good for DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ethanwu0131
April 12, 2024, 04:47:33 PM
post Re: UD 2.7 OCD LED stays on, no output during inital test
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Admiral Aaron Ravensdale
April 12, 2024, 11:43:36 AM
post Mosfet Buffer Stage Questions
[Beginners]
Egg
April 12, 2024, 12:49:02 AM
post Re: UD 2.7 OCD LED stays on, no output during inital test
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
April 12, 2024, 12:41:16 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
April 12, 2024, 12:22:41 AM
post Re: Capacitor Blowout
[Sell / Buy / Trade]
Michelle_
April 11, 2024, 10:45:53 PM
post Re: UD 2.7 OCD LED stays on, no output during inital test
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Admiral Aaron Ravensdale
April 11, 2024, 07:39:30 PM
post Re: UD 2.7 OCD LED stays on, no output during inital test
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
April 11, 2024, 07:24:52 PM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
sky-guided
April 11, 2024, 06:09:30 PM
post UD 2.7 OCD LED stays on, no output during inital test
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Admiral Aaron Ravensdale
April 11, 2024, 12:55:16 PM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
alan sailer
April 11, 2024, 03:40:00 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
sky-guided
April 11, 2024, 03:05:07 AM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
Michelle_
April 11, 2024, 02:57:33 AM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
alan sailer
April 11, 2024, 01:44:32 AM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
Michelle_
April 11, 2024, 01:31:40 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
OmGigaTron
April 11, 2024, 01:11:00 AM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
alan sailer
April 11, 2024, 12:58:52 AM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
Michelle_
April 11, 2024, 12:31:37 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
alan sailer
April 11, 2024, 12:30:21 AM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
alan sailer
April 10, 2024, 11:41:46 PM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
Mads Barnkob
April 10, 2024, 11:33:32 PM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
Michelle_
April 10, 2024, 10:41:33 PM
post Re: Tesla coil safety questions, risk analysis quantified
[Beginners]
MRMILSTAR
April 10, 2024, 10:31:31 PM
post Tesla coil safety questions, risk analysis quantified
[Beginners]
Michelle_
April 10, 2024, 09:56:35 PM
post Re: Drsstc voltage spike question
[Dual Resonant Solid State Tesla coils (DRSSTC)]
unrealcrafter2
April 10, 2024, 08:59:26 PM
post Re: Drsstc voltage spike question
[Dual Resonant Solid State Tesla coils (DRSSTC)]
markus
April 10, 2024, 06:35:30 PM
post Re: Drsstc voltage spike question
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
April 10, 2024, 05:35:14 PM
post Medium Drsstc question
[Dual Resonant Solid State Tesla coils (DRSSTC)]
unrealcrafter2
April 10, 2024, 03:07:02 PM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Michelle_
April 10, 2024, 03:42:12 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Michelle_
April 10, 2024, 03:41:04 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
sky-guided
April 10, 2024, 02:50:23 AM
post Re: DRSSTC V1 using BSM1500
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Unrealeous
April 10, 2024, 01:32:17 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
OmGigaTron
April 10, 2024, 01:26:29 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
OmGigaTron
April 10, 2024, 01:18:35 AM
post Re: Big Coil Big Sparks
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
April 09, 2024, 07:34:19 PM
post Re: DRSSTC V1 using BSM1500
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
April 09, 2024, 06:14:27 PM
post Re: CM400 Induction Heater
[Electronic Circuits]
markus
April 09, 2024, 06:08:53 PM
post Re: DRSSTC V1 using BSM1500
[Dual Resonant Solid State Tesla coils (DRSSTC)]
markus
April 09, 2024, 05:15:19 PM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Michelle_
April 09, 2024, 05:11:04 PM
post Re: Big Coil Big Sparks
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
April 09, 2024, 06:32:16 AM
post DRSSTC V1 using BSM150
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Unrealeous
April 09, 2024, 04:04:47 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
alan sailer
April 09, 2024, 03:27:11 AM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 
SimplePortal 2.3.6 © 2008-2014, SimplePortal