Author Topic: How many Farads should my bank have?  (Read 478 times)

Offline fpicoral

  • High Voltage Enthusiast
  • *
  • Posts: 1
  • Karma: +0/-0
    • View Profile
How many Farads should my bank have?
« on: April 21, 2019, 08:41:25 PM »
Hello there!

I'm building a small Tesla coil (a little bit taller than 1 foot) and I was wondering how many Farads should my capacitor bank have to I get bigger arcs. My power supply is around 15kV (flyback from CRT tv) and I will build the capacitors (saltwater capacitors) from 16oz bottles. I was thinking about something around 10.5nF, is this enough?

Offline Fumeaux

  • High Voltage Experimenter
  • **
  • Posts: 68
  • Karma: +7/-0
    • View Profile
Re: How many Farads should my bank have?
« Reply #1 on: April 21, 2019, 09:18:09 PM »
That's not a simple yes or no question. It all depends on something. First you should match the primary frequency to the secondary frequency. Howmany bottles that may take. Then you have to experiment yourself if more bottles and less turns is better or the opposite.

Offline Teravolt

  • High Voltage Technician
  • ***
  • Posts: 101
  • Karma: +2/-0
    • View Profile
Re: How many Farads should my bank have?
« Reply #2 on: April 22, 2019, 11:37:35 PM »
the question is how much capacitance is in 1 bottle what is the inductance in your primary and what is the resonant frequency in your secondary with topload toride. how many bottles will it take with your primary inductance to make your primary equal to your secondary frequency. caps in parallel add so you will have to make some mesurements and your flyback may have enough energy to make 2-3" sparks if you want more you will need more power.

https://www.daycounter.com/Calculators/LC-Resonance-Calculator.phtml

Offline Mads Barnkob

  • Administrator
  • High Voltage Expert
  • *****
  • Posts: 1142
  • Karma: +17/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: How many Farads should my bank have?
« Reply #3 on: April 23, 2019, 08:11:52 AM »
You should use some of the good old tools available on classictesla.com

Bottle capacitor calculator: http://classictesla.com/home/570-2/

Use the MMC calculator: http://classictesla.com/home/javammc/ and pay attention to the LTR values
Static Gap LTR Value (uF):
SRSG LTR Value (uF):

Last but certainly not least, use JavaTC to design the rest of your coil: http://classictesla.com/home/javatc/

Some good information and links on SGTC design: https://www.teslacoildesign.com/design.html also loneoceans writes some good explanations: https://www.loneoceans.com/labs/teslacoil1/

« Last Edit: April 23, 2019, 08:15:39 AM by Mads Barnkob »
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline MRMILSTAR

  • High Voltage Experimenter
  • **
  • Posts: 84
  • Karma: +3/-0
  • Cedar Rapids, Iowa
    • View Profile
Re: How many Farads should my bank have?
« Reply #4 on: October 05, 2019, 10:53:46 PM »
A SGTC design usually starts with two things. The first is what HV power supply do you have (voltage and current)? The second is what type of HV pulse-rated capacitor can you make or buy? In your case I think the driver here is how much capacitance you can make with a reasonable number of beer bottles. The capacitors have to be reasonably compact so that short heavy wire can be used, which is probably one bucket's worth.

After you have determined the number of beer bottles that you can squeeze into one bucket, compute the capacitance using the tool mentioned in a previous reply. Once you know the capacitance, you can now start using JAVATC to design the rest of your TC.
« Last Edit: October 08, 2019, 10:51:41 PM by MRMILSTAR »

High Voltage Forum

Re: How many Farads should my bank have?
« Reply #4 on: October 05, 2019, 10:53:46 PM »

 


* Recent Topics and Posts

post Re: making a useable induction forge.
[Transformer (iron core)]
rustedone
Today at 05:55:24 PM
post Re: making a useable induction forge.
[Transformer (iron core)]
rustedone
Today at 05:49:02 PM
post Re: Analog Panel Meter Shunt Calculation and Custom Scale Design
[Beginners]
klugesmith
Today at 05:36:46 PM
post Re: making a useable induction forge.
[Transformer (iron core)]
T3sl4co1l
Today at 05:07:22 PM
post making a useable induction forge.
[Transformer (iron core)]
rustedone
Today at 04:20:15 PM
post Re: 220ac to 440dc 5a boost convertor
[Voltage Multipliers]
rustedone
Today at 04:03:58 PM
post Analog Panel Meter Shunt Calculation and Custom Scale Design
[Beginners]
Mads Barnkob
Today at 07:56:20 AM
post Re: Mysterious Chinese HV capacitors
[Capacitor banks]
MRMILSTAR
Today at 05:40:55 AM
post Re: Mysterious Chinese HV capacitors
[Capacitor banks]
davekni
Today at 03:33:52 AM
post WTS [US]: pole transformer, SRSG, PTs, NSTs, capacitors, variacs, [MORE]
[Sell / Buy / Trade]
acobaugh
October 15, 2019, 09:36:55 PM
post Mysterious Chinese HV capacitors
[Capacitor banks]
MRMILSTAR
October 15, 2019, 09:12:09 PM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
October 15, 2019, 12:38:24 PM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
davekni
October 14, 2019, 10:02:07 PM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
Weston
October 14, 2019, 08:46:54 PM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
MRMILSTAR
October 14, 2019, 08:28:19 PM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
davekni
October 14, 2019, 07:27:22 PM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
davekni
October 14, 2019, 07:01:34 PM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
MRMILSTAR
October 14, 2019, 04:23:56 PM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
klugesmith
October 14, 2019, 07:27:49 AM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
T3sl4co1l
October 14, 2019, 07:10:39 AM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
MRMILSTAR
October 14, 2019, 05:43:57 AM
post Re: so far video
[Spark gap Tesla coils]
davekni
October 14, 2019, 05:40:27 AM
post Re: Drsstc 4 (new direction)
[Dual Resonant Solid State Tesla coils]
davekni
October 14, 2019, 05:23:48 AM
post Re: Drsstc 4 (new direction)
[Dual Resonant Solid State Tesla coils]
oneKone
October 14, 2019, 04:37:49 AM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
davekni
October 14, 2019, 03:47:03 AM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
klugesmith
October 13, 2019, 11:05:25 PM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
davekni
October 13, 2019, 09:29:25 PM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
MRMILSTAR
October 13, 2019, 04:43:47 PM
post Re: My first DRSSTC on bricks
[Dual Resonant Solid State Tesla coils]
davekni
October 13, 2019, 07:04:20 AM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
davekni
October 13, 2019, 07:00:57 AM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
davekni
October 13, 2019, 06:36:13 AM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
Weston
October 13, 2019, 12:41:07 AM
post Re: My first DRSSTC on bricks
[Dual Resonant Solid State Tesla coils]
Hydron
October 13, 2019, 12:17:39 AM
post Re: My first DRSSTC on bricks
[Dual Resonant Solid State Tesla coils]
Laci
October 12, 2019, 11:21:39 PM
post How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
MRMILSTAR
October 12, 2019, 08:37:36 PM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
davekni
October 12, 2019, 06:57:55 PM
post Re: so far video
[Spark gap Tesla coils]
thedoc298
October 12, 2019, 05:28:01 PM
post Re: 220ac to 440dc 5a boost convertor
[Voltage Multipliers]
rustedone
October 12, 2019, 04:58:28 PM
post Re: My first DRSSTC on bricks
[Dual Resonant Solid State Tesla coils]
Netzpfuscher
October 12, 2019, 03:53:12 PM
post Re: My first DRSSTC on bricks
[Dual Resonant Solid State Tesla coils]
Laci
October 12, 2019, 02:12:59 PM
post Re: 220ac to 440dc 5a boost convertor
[Voltage Multipliers]
rustedone
October 12, 2019, 10:43:48 AM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
ScottE
October 12, 2019, 07:38:47 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
davekni
October 12, 2019, 06:16:12 AM
post Re: DRSSTC with litz-wire primary and 40 x TO247 IGBT H-Bridge
[Dual Resonant Solid State Tesla coils]
davekni
October 12, 2019, 05:52:51 AM
post Re: so far video
[Spark gap Tesla coils]
MRMILSTAR
October 12, 2019, 05:13:28 AM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
davekni
October 12, 2019, 04:41:19 AM
post Re: so far video
[Spark gap Tesla coils]
thedoc298
October 12, 2019, 02:58:19 AM
post Re: so far video
[Spark gap Tesla coils]
thedoc298
October 12, 2019, 02:56:17 AM
post Re: so far video
[Spark gap Tesla coils]
MRMILSTAR
October 12, 2019, 02:38:43 AM
post so far video
[Spark gap Tesla coils]
thedoc298
October 12, 2019, 12:26:44 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