Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 71 users online :: 4 registered, 0 hidden and 67 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Pictures from the 9th Uk Teslathon, Cambridge.

All non-spudgun related discussion goes here such as projects, theories, serious questions, etc. All "off-topic" posts (aka useless posting, determined by moderators) will be removed.
Sponsored 
  • Author
    Message

Unread postAuthor: rp181 » Tue Oct 28, 2008 4:10 pm

try sampling capacitors from CDE, even if your not a company (dont even try to lie) theyle still sometimes give you some, if you just say its for a project.
  • 0

User avatar
rp181
Brigadier General
Brigadier General
 
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Reputation: 0

Unread postAuthor: jrrdw » Tue Oct 28, 2008 5:13 pm

Maby you could get some from old tv sets and things alike.
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6540
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: POLAND_SPUD » Tue Oct 28, 2008 5:14 pm

uhmm sorry for going off topic... but would it be usefull for buildign a coil gun ? http://www.allegro.pl/item467347172_kon ... v_nos.html
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: rp181 » Tue Oct 28, 2008 5:30 pm

poland: too low capacitiance, and that high voltage isnt needed. Also, those type wont take well to pulsing. Best cost/preformance capacitor's for coilguns are electrolytic.
http://www.alltronics.com/cgi-bin/categ ... tem=21P001
is a very good extremly cheap capacitor, thats 7 dollars for 300joules (alot of energy) Make sure you know what your doing, it takes 16 joules through the heart to kill.

Jrrdw: Capacitors from old apliances wont work well because of the extremly high frequency and cycling. Wrong types will blow up.
  • 0

User avatar
rp181
Brigadier General
Brigadier General
 
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Reputation: 0

Unread postAuthor: MaxuS the 2nd » Tue Oct 28, 2008 6:17 pm

Don't use Electrolyte Capacitors for pulses!

Use Polypropelene, they're the only type that will work for a long time without fatigue.
  • 0

Badman
User avatar
MaxuS the 2nd
Colonel
Colonel
 
Posts: 674
Joined: Sat Jan 19, 2008 3:59 pm
Reputation: 0

Unread postAuthor: rp181 » Tue Oct 28, 2008 7:33 pm

electrolyctic are fine for pulses (like coil/rail gun). There just bad for fast cycling rates.
  • 0

User avatar
rp181
Brigadier General
Brigadier General
 
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Reputation: 0

Unread postAuthor: MaxuS the 2nd » Wed Oct 29, 2008 2:48 am

..Still wouldn't use them.
  • 0

Badman
User avatar
MaxuS the 2nd
Colonel
Colonel
 
Posts: 674
Joined: Sat Jan 19, 2008 3:59 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: psycix » Wed Oct 29, 2008 5:26 pm

Ahh tesla coils.
One thing I will want to make someday when I have time and money left to build something cool (besides spudguns)
How much time and money does it cost to build a decent tesla coil?


And ofcourse, a tesla coil becomes three times as awesome if it can play the super mario theme. :D
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: rp181 » Wed Oct 29, 2008 5:31 pm

It all depends on how big and how profesional you want it to be. To audio modulate, and get big sparks, it would get expensive with the IGBT's. A basic SGTC will range from free-500$ depending on resources. Capacitors are the most expensive part.
  • 0

User avatar
rp181
Brigadier General
Brigadier General
 
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Reputation: 0

Unread postAuthor: MaxuS the 2nd » Thu Oct 30, 2008 5:47 am

The bigger, the better ;)
  • 0

Badman
User avatar
MaxuS the 2nd
Colonel
Colonel
 
Posts: 674
Joined: Sat Jan 19, 2008 3:59 pm
Reputation: 0

Unread postAuthor: psycix » Thu Oct 30, 2008 9:28 am

Then dance around closely with a group of friends.
Last one standing wins the game.
Or let other people do it and place bets. :D
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: MaxuS the 2nd » Mon Dec 22, 2008 1:47 pm

Well I practically finished it.

Just needs tuning and I need to fit the proper toroid.

[youtube]http://www.youtube.com/watch?v=005N-NIAtiU[/youtube]
  • 0

Badman
User avatar
MaxuS the 2nd
Colonel
Colonel
 
Posts: 674
Joined: Sat Jan 19, 2008 3:59 pm
Reputation: 0

Unread postAuthor: jrrdw » Mon Dec 22, 2008 2:48 pm

EUREKA! It works. I thought there had to be a contact for the arc to jump to?
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6540
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: MaxuS the 2nd » Mon Dec 22, 2008 5:16 pm

Nah, I think that's just if you want to lengthen the spark.
It's because the electric field ionises the air around the output point and sparks and streams jump from there.

It's a pretty cool thing to read about, let alone build :D
  • 0

Badman
User avatar
MaxuS the 2nd
Colonel
Colonel
 
Posts: 674
Joined: Sat Jan 19, 2008 3:59 pm
Reputation: 0

Unread postAuthor: rp181 » Mon Dec 22, 2008 7:17 pm

Thats the cool thing about Tesla coils. There such high voltage that going to anything works. Its like a static shock, a doorknob isnt the other end of you =p

Maxus: is it a sgtc, sstc, or drsstc?
  • 0

User avatar
rp181
Brigadier General
Brigadier General
 
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Reputation: 0

PreviousNext

Return to Non-Spudgun Related Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'