Author Topic: Would this be about right or not.  (Read 1637 times)

Offline thedoc298

  • High Voltage Experimenter
  • **
  • Posts: 79
  • Karma: +0/-0
    • View Profile
Would this be about right or not.
« on: April 06, 2019, 01:42:26 PM »
I am shooting for a coil secondary that will have 24 inchs of 24awg  wire. My wire is .0223in  so to get 24 inches i will need about 1075 turns. My question is some sites say shoot for 800 turns, some say 800 to 1000. Will this be ok at 1075 turn


Thanks to all the reply's. The secondary is 6 to 6 1/2 inches. I read others say only use 22 awg, but I already ordered 24.

Thanks for the charts also
« Last Edit: April 08, 2019, 05:41:04 PM by thedoc298 »

Offline AndreiRS

  • High Voltage Experimenter
  • **
  • Posts: 73
  • Karma: +0/-0
    • View Profile
Re: Would this be about right or not.
« Reply #1 on: April 06, 2019, 05:44:53 PM »
I made mine with 1400 turns of 32 wire. It didn't work very well. Just small almost invisible sparks. There is too much impedance on the coil. A lot of wire resistance plus a lot of inductance. I removed all wire and I plan to use 26 or maybe 24 or 22 awg next time. Too much turns is not good as sometimes we may think. You would get more voltage, but the impedance eats it all.

Whats is the tube diameter?

Offline FilipŠebík

  • High Voltage Enthusiast
  • *
  • Posts: 34
  • Karma: +1/-0
    • View Profile
Re: Would this be about right or not.
« Reply #2 on: April 06, 2019, 09:51:00 PM »
A lot of wire resistance plus a lot of inductance.
Actually, inductance doesn't matter on the secondary, because it is resonant, so XL = 0 R

And for the coil, take a look at this table https://docs.google.com/spreadsheets/d/1TkpvH7e5geHCIhB_Gr3egwL_THJYqjZIU5INoo54nD4/edit#gid=482293335
Made by Mads Barnkob

Offline Hydron

  • Administrator
  • High Voltage Engineer
  • *****
  • Posts: 322
  • Karma: +11/-0
    • View Profile
Re: Would this be about right or not.
« Reply #3 on: April 06, 2019, 11:13:57 PM »
I wouldn't worry too much about it as long as it's in a sensible range, which ~1000 turns sounds it is.

Offline Mads Barnkob

  • Administrator
  • High Voltage Expert
  • *****
  • Posts: 1430
  • Karma: +24/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Would this be about right or not.
« Reply #4 on: April 08, 2019, 08:41:13 AM »
I am shooting for a coil secondary that will have 24 inchs of 24awg  wire. My wire is .0223in  so to get 24 inches i will need about 1075 turns. My question is some sites say shoot for 800 turns, some say 800 to 1000. Will this be ok at 1075 turns.

This is my first coil. Thanks

Could you please provide some more information?

What is your secondary diameter? What resonant frequency are you aiming for?

Regarding my table of secondary specifications, green is just a safe choice, yellow will work just fine and red is for experiments where you want to explore the outer bounds of "normal" :)
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline thedoc298

  • High Voltage Experimenter
  • **
  • Posts: 79
  • Karma: +0/-0
    • View Profile
Re: Would this be about right or not.
« Reply #5 on: April 08, 2019, 05:48:58 PM »
I made mine with 1400 turns of 32 wire. It didn't work very well. Just small almost invisible sparks. There is too much impedance on the coil. A lot of wire resistance plus a lot of inductance. I removed all wire and I plan to use 26 or maybe 24 or 22 awg next time. Too much turns is not good as sometimes we may think. You would get more voltage, but the impedance eats it all.

Whats is the tube diameter?

The diameter is 6ish got the caps (942C20P15K-F - 150nF ), epoxy and the 24 awg wire coming Friday. Been wanting to do this for over 30 years.

Offline thedoc298

  • High Voltage Experimenter
  • **
  • Posts: 79
  • Karma: +0/-0
    • View Profile
Re: Would this be about right or not.
« Reply #6 on: April 08, 2019, 05:53:28 PM »
I wouldn't worry too much about it as long as it's in a sensible range, which ~1000 turns sounds it is.


Sounds reassuring, thanks. Been reading for over 30 years, now I find when I actually want to do it, I don't know nothing. :) It's the little details. 

Offline Mads Barnkob

  • Administrator
  • High Voltage Expert
  • *****
  • Posts: 1430
  • Karma: +24/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Would this be about right or not.
« Reply #7 on: April 10, 2019, 08:27:57 AM »
I am shooting for a coil secondary that will have 24 inchs of 24awg  wire. My wire is .0223in  so to get 24 inches i will need about 1075 turns. My question is some sites say shoot for 800 turns, some say 800 to 1000. Will this be ok at 1075 turn


Thanks to all the reply's. The secondary is 6 to 6 1/2 inches. I read others say only use 22 awg, but I already ordered 24.

Thanks for the charts also

Do not worry about 24 vs. 22 AWG, you have a solid design that pings in at some 42,000 impedance, just shy of the "magic" 50k that will almost always give good performance. So now that you know its on the lower side, you can design your spark gap to be as aggressive as possible to deliver high and fast peak currents, because your coil is not designed for slow pulses (high impedance)

Looking forward to see your results and please add some pictures as you build things :) Seeing a 30 year old dream come true is great!

http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline thedoc298

  • High Voltage Experimenter
  • **
  • Posts: 79
  • Karma: +0/-0
    • View Profile
Re: Would this be about right or not.
« Reply #8 on: April 17, 2019, 09:22:07 PM »
I am shooting for a coil secondary that will have 24 inchs of 24awg  wire. My wire is .0223in  so to get 24 inches i will need about 1075 turns. My question is some sites say shoot for 800 turns, some say 800 to 1000. Will this be ok at 1075 turn


Thanks to all the reply's. The secondary is 6 to 6 1/2 inches. I read others say only use 22 awg, but I already ordered 24.

Thanks for the charts also

Do not worry about 24 vs. 22 AWG, you have a solid design that pings in at some 42,000 impedance, just shy of the "magic" 50k that will almost always give good performance. So now that you know its on the lower side, you can design your spark gap to be as aggressive as possible to deliver high and fast peak currents, because your coil is not designed for slow pulses (high impedance)

Looking forward to see your results and please add some pictures as you build things :) Seeing a 30 year old dream come true is great!

Thank you much, hear is a picture of the secondary, I plan on winding it tonight and then epoxy it tomorrow. I will post back the epoxy job when it is finished.

Thank all who responded, can't wait to get this underway.  Ps, I am winding 24 inches but I have enough for more, would 24.9 be alright.
« Last Edit: April 17, 2019, 09:24:35 PM by thedoc298 »

High Voltage Forum

Re: Would this be about right or not.
« Reply #8 on: April 17, 2019, 09:22:07 PM »

 


* Recent Topics and Posts

post Re: IGBTs keep dying (un-solved again)
[Dual Resonant Solid State Tesla coils (DRSSTC)]
TMaxElectronics
July 04, 2020, 10:35:50 PM
post Re: IGBTs keep dying (un-solved again)
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
July 04, 2020, 08:56:15 PM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
TMaxElectronics
July 04, 2020, 04:37:32 PM
post Re: IGBTs keep dying (un-solved again)
[Dual Resonant Solid State Tesla coils (DRSSTC)]
TMaxElectronics
July 04, 2020, 04:14:44 PM
post Dell PowerEdge M1000E Blade Server Teardown
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
July 04, 2020, 01:52:14 PM
post Help needed: HV Driver circuit
[Transformer (Ferrite Core)]
HighVoltageRulezz
July 04, 2020, 12:37:48 PM
post Re: Easy to build Polyphonic MIDI Interrupter
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Max
July 04, 2020, 12:17:47 AM
post Cathodes in Compact Fluorescent Lamps
[Light, Lasers and Optics]
klugesmith
July 03, 2020, 07:12:18 AM
post Re: What's needed to heat up 0.75 g of SiC (susceptor) mass until it turns dim-red??
[Radio Frequency]
klugesmith
July 03, 2020, 06:36:16 AM
post Re: IGBTs keep dying (un-solved again)
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
July 03, 2020, 04:20:42 AM
post Re: "Slayer exciter" analysis
[Solid State Tesla Coils (SSTC)]
acmq
July 03, 2020, 03:01:56 AM
post Re: Easy to build Polyphonic MIDI Interrupter
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
AstRii
July 02, 2020, 11:17:48 PM
post Re: How to prevent secondary oxidation / Rust
[Dual Resonant Solid State Tesla coils (DRSSTC)]
MRMILSTAR
July 02, 2020, 11:09:25 PM
post Re: Differential probe testing setup
[Laboratories, Equipment and Tools]
TMaxElectronics
July 02, 2020, 10:57:02 PM
post Re: Differential probe testing setup
[Laboratories, Equipment and Tools]
Twospoons
July 02, 2020, 10:47:18 PM
post Re: How to prevent secondary oxidation / Rust
[Dual Resonant Solid State Tesla coils (DRSSTC)]
johnf
July 02, 2020, 09:03:20 PM
post Re: How to prevent secondary oxidation / Rust
[Dual Resonant Solid State Tesla coils (DRSSTC)]
DJthefirst
July 02, 2020, 08:01:03 PM
post Re: Easy to build Polyphonic MIDI Interrupter
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Max
July 02, 2020, 07:04:55 PM
post Re: How to prevent secondary oxidation / Rust
[Dual Resonant Solid State Tesla coils (DRSSTC)]
TMaxElectronics
July 02, 2020, 07:02:30 PM
post Re: IGBTs keep dying (solved for now)
[Dual Resonant Solid State Tesla coils (DRSSTC)]
TMaxElectronics
July 02, 2020, 06:51:20 PM
post Re: Easy to build Polyphonic MIDI Interrupter
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
AstRii
July 02, 2020, 05:34:23 PM
post Re: How to prevent secondary oxidation / Rust
[Dual Resonant Solid State Tesla coils (DRSSTC)]
DJthefirst
July 02, 2020, 05:09:09 PM
post Re: How to prevent secondary oxidation / Rust
[Dual Resonant Solid State Tesla coils (DRSSTC)]
TMaxElectronics
July 02, 2020, 12:51:29 PM
post Differential probe testing setup
[Laboratories, Equipment and Tools]
TMaxElectronics
July 02, 2020, 12:20:18 PM
post Re: How to prevent secondary oxidation / Rust
[Dual Resonant Solid State Tesla coils (DRSSTC)]
MRMILSTAR
July 02, 2020, 05:30:41 AM
post How to prevent secondary oxidation / Rust
[Dual Resonant Solid State Tesla coils (DRSSTC)]
DJthefirst
July 02, 2020, 04:16:58 AM
post Re: induction heater troubleshooting help
[Electronic Circuits]
petespaco
July 02, 2020, 01:02:02 AM
post Re: What's needed to heat up 0.75 g of SiC (susceptor) mass until it turns dim-red??
[Radio Frequency]
T3sl4co1l
July 01, 2020, 06:54:30 AM
post Re: "Slayer exciter" analysis
[Solid State Tesla Coils (SSTC)]
T3sl4co1l
July 01, 2020, 06:25:30 AM
post Re: "Slayer exciter" analysis
[Solid State Tesla Coils (SSTC)]
acmq
July 01, 2020, 02:47:13 AM
post Re: A three-phase "tree phase" Tesla coil
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Steve Ward
July 01, 2020, 02:43:34 AM
post Re: induction heater troubleshooting help
[Electronic Circuits]
aes92000
July 01, 2020, 02:33:07 AM
post Re: induction heater troubleshooting help
[Electronic Circuits]
petespaco
July 01, 2020, 12:03:08 AM
post Re: induction heater troubleshooting help
[Electronic Circuits]
aes92000
June 30, 2020, 10:34:36 PM
post Re: E-Bay Marx generator
[Voltage Multipliers]
ritaismyconscience
June 30, 2020, 09:14:06 PM
post Re: What's needed to heat up 0.75 g of SiC (susceptor) mass until it turns dim-red??
[Radio Frequency]
ritaismyconscience
June 30, 2020, 09:05:32 PM
post Re: induction heater troubleshooting help
[Electronic Circuits]
ritaismyconscience
June 30, 2020, 09:01:55 PM
post Re: A three-phase "tree phase" Tesla coil
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Weston
June 30, 2020, 08:22:33 PM
post Re: "Slayer exciter" analysis
[Solid State Tesla Coils (SSTC)]
Weston
June 30, 2020, 07:54:40 PM
post "Slayer exciter" analysis
[Solid State Tesla Coils (SSTC)]
acmq
June 30, 2020, 05:13:57 PM
post induction heater troubleshooting help
[Electronic Circuits]
aes92000
June 30, 2020, 04:08:34 PM
post Re: 100$ Thermal Camera With 32x32 Pixel. HTi HT-02D Unboxing And Test
[Laboratories, Equipment and Tools]
Mads Barnkob
June 30, 2020, 02:54:22 PM
post Re: A three-phase "tree phase" Tesla coil
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
June 30, 2020, 01:04:30 PM
post Re: What's needed to heat up 0.75 g of SiC (susceptor) mass until it turns dim-red??
[Radio Frequency]
Justin
June 30, 2020, 10:07:49 AM
post Re: What's needed to heat up 0.75 g of SiC (susceptor) mass until it turns dim-red??
[Radio Frequency]
Twospoons
June 29, 2020, 12:43:36 AM
post Re: A three-phase "tree phase" Tesla coil
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Hydron
June 28, 2020, 12:57:53 PM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Hydron
June 28, 2020, 12:24:17 PM
post Re: 100$ Thermal Camera With 32x32 Pixel. HTi HT-02D Unboxing And Test
[Laboratories, Equipment and Tools]
davekni
June 28, 2020, 02:19:44 AM
post E-Bay Marx generator
[Voltage Multipliers]
MRMILSTAR
June 27, 2020, 09:36:57 PM
post A three-phase "tree phase" Tesla coil
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Steve Ward
June 27, 2020, 09:28:56 PM

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