Author Topic: Would this be about right or not.  (Read 1091 times)

Offline thedoc298

  • High Voltage Experimenter
  • **
  • Posts: 65
  • 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: 286
  • Karma: +8/-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: 1228
  • Karma: +17/-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: 65
  • 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: 65
  • 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: 1228
  • Karma: +17/-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: 65
  • 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: 500Khz Induction Heater - Need help with Driver
[Beginners]
T3sl4co1l
Today at 12:30:19 AM
post 500Khz Induction Heater - Need help with Driver
[Beginners]
Mysteriousduck
January 17, 2020, 11:17:33 PM
post Re: Energy and Efficiency
[Induction Launchers, Coil Guns and Rails guns]
klugesmith
January 17, 2020, 08:55:37 PM
post Re: Energy and Efficiency
[Induction Launchers, Coil Guns and Rails guns]
T3sl4co1l
January 17, 2020, 04:01:23 PM
post Re: Energy and Efficiency
[Induction Launchers, Coil Guns and Rails guns]
RobertL
January 17, 2020, 04:22:25 AM
post Re: Energy and Efficiency
[Induction Launchers, Coil Guns and Rails guns]
Twospoons
January 17, 2020, 01:37:37 AM
post Energy and Efficiency
[Induction Launchers, Coil Guns and Rails guns]
RobertL
January 16, 2020, 11:51:51 PM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Netzpfuscher
January 16, 2020, 11:59:04 AM
post Re: Easy Oscillator for Induction Heating and, Maybe Tesla Coil Power?
[Electronic Circuits]
T3sl4co1l
January 16, 2020, 02:53:32 AM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
acobaugh
January 15, 2020, 08:57:37 PM
post Re: Universal bus precharge & fan speed controller
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
January 15, 2020, 07:27:10 PM
post Re: Universal bus precharge & fan speed controller
[Dual Resonant Solid State Tesla coils (DRSSTC)]
acobaugh
January 15, 2020, 07:08:00 PM
post Re: Easy Oscillator for Induction Heating and, Maybe Tesla Coil Power?
[Electronic Circuits]
Mads Barnkob
January 15, 2020, 01:26:57 PM
post Re: Commercial circuit simulator Micro-Cap 12 is now free to download
[Laboratories, Equipment and Tools]
SteveN87
January 15, 2020, 12:37:28 PM
post Re: Commercial circuit simulator Micro-Cap 12 is now free to download
[Laboratories, Equipment and Tools]
Twospoons
January 15, 2020, 01:15:45 AM
post Easy Oscillator for Induction Heating and, Maybe Tesla Coil Power?
[Electronic Circuits]
petespaco
January 14, 2020, 11:19:23 PM
post Re: Welcome new members, come say hello and tell a little about yourself :)
[General Chat]
Nicko
January 14, 2020, 10:50:54 PM
post Ebay [US] 1x CM300HA-24H H-series, 20$ for a single switch brick
[Sell / Buy / Trade]
Mads Barnkob
January 14, 2020, 08:24:10 PM
post Re: Mazilli ZVS Driver Modification Problems
[Transformer (Ferrite Core)]
T3sl4co1l
January 14, 2020, 07:36:14 PM
post Re: Commercial circuit simulator Micro-Cap 12 is now free to download
[Laboratories, Equipment and Tools]
shrad
January 14, 2020, 12:51:32 PM
post Re: Mazilli ZVS Driver Modification Problems
[Transformer (Ferrite Core)]
davekni
January 14, 2020, 05:27:11 AM
post Re: Mazilli ZVS Driver Modification Problems
[Transformer (Ferrite Core)]
Andrew321
January 14, 2020, 02:27:54 AM
post Re: Ok now I'm stuck ¯\_(ツ)_/¯
[Dual Resonant Solid State Tesla coils (DRSSTC)]
dj.cosmo.esq
January 13, 2020, 11:42:07 PM
post Commercial circuit simulator Micro-Cap 12 is now free to download
[Laboratories, Equipment and Tools]
Mads Barnkob
January 13, 2020, 11:30:11 PM
post Re: Ok now I'm stuck ¯\_(ツ)_/¯
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
January 13, 2020, 08:22:20 PM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
T3sl4co1l
January 13, 2020, 02:36:04 PM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Hydron
January 13, 2020, 10:19:03 AM
post Re: Ok now I'm stuck ¯\_(ツ)_/¯
[Dual Resonant Solid State Tesla coils (DRSSTC)]
dj.cosmo.esq
January 13, 2020, 09:21:59 AM
post Re: Mazilli ZVS Driver Modification Problems
[Transformer (Ferrite Core)]
davekni
January 13, 2020, 01:24:36 AM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 13, 2020, 12:34:48 AM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
T3sl4co1l
January 12, 2020, 09:08:17 PM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
AstRii
January 12, 2020, 06:39:33 PM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
AstRii
January 12, 2020, 06:33:22 PM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
AstRii
January 12, 2020, 06:25:27 PM
post Re: A hydroelectric system getting built
[General Chat]
klugesmith
January 12, 2020, 06:23:30 PM
post Mazilli ZVS Driver Modification Problems
[Transformer (Ferrite Core)]
Andrew321
January 12, 2020, 05:36:46 PM
post Re: A hydroelectric system getting built
[General Chat]
Uspring
January 12, 2020, 01:35:20 PM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 12, 2020, 06:21:10 AM
post Re: A hydroelectric system getting built
[General Chat]
plasma
January 12, 2020, 05:01:29 AM
post Re: A hydroelectric system getting built
[General Chat]
klugesmith
January 12, 2020, 04:02:42 AM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
AstRii
January 12, 2020, 03:29:15 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic Circuits]
petespaco
January 12, 2020, 03:18:17 AM
post Re: A hydroelectric system getting built
[General Chat]
plasma
January 12, 2020, 02:03:03 AM
post Re: A hydroelectric system getting built
[General Chat]
klugesmith
January 12, 2020, 01:53:35 AM
post A hydroelectric system getting built
[General Chat]
plasma
January 11, 2020, 11:26:31 PM
post Re: Silicon Carbide MOSFETs in a small Tesla coil
[Solid State Tesla Coils (SSTC)]
Weston
January 11, 2020, 10:36:17 PM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 11, 2020, 08:01:13 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic Circuits]
Mads Barnkob
January 11, 2020, 12:28:35 PM
post Re: FPS1000HD how-to, information and work flow collection
[High Speed Filming]
Mads Barnkob
January 11, 2020, 12:07:05 PM
post Re: Strange oscillations
[Dual Resonant Solid State Tesla coils (DRSSTC)]
AstRii
January 11, 2020, 09:23:07 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