Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 93
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
All today's birthdays', congrats!
Barry (70)
Snowcat (37)
wylie (43)


Next birthdays
02/01 Barry (70)
02/01 Snowcat (37)
02/01 wylie (43)
Contact
If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.


Special Thanks To:
  • Aaron Holmes
  • Aaron Wheeler
  • Adam Horden
  • Alan Scrimgeour
  • Andre
  • Andrew Haynes
  • Anonymous000
  • asabase
  • Austin Weil
  • barney
  • Barry
  • Bert Hickman
  • Bill Kukowski
  • Blitzorn
  • Brandon Paradelas
  • Bruce Bowling
  • BubeeMike
  • Byong Park
  • Cesiumsponge
  • Chris F.
  • Chris Hooper
  • Corey Worthington
  • Derek Woodroffe
  • Dalus
  • Dan Strother
  • Daniel Davis
  • Daniel Uhrenholt
  • datasheetarchive
  • Dave Billington
  • Dave Marshall
  • David F.
  • Dennis Rogers
  • drelectrix
  • Dr. John Gudenas
  • Dr. Spark
  • E.TexasTesla
  • eastvoltresearch
  • Eirik Taylor
  • Erik Dyakov
  • Erlend^SE
  • Finn Hammer
  • Firebug24k
  • GalliumMan
  • Gary Peterson
  • George Slade
  • GhostNull
  • Gordon Mcknight
  • Graham Armitage
  • Grant
  • GreySoul
  • Henry H
  • IamSmooth
  • In memory of Leo Powning
  • Jacob Cash
  • James Howells
  • James Pawson
  • Jeff Greenfield
  • Jeff Thomas
  • Jesse Frost
  • Jim Mitchell
  • jlr134
  • Joe Mastroianni
  • John Forcina
  • John Oberg
  • John Willcutt
  • Jon Newcomb
  • klugesmith
  • Leslie Wright
  • Lutz Hoffman
  • Mads Barnkob
  • Martin King
  • Mats Karlsson
  • Matt Gibson
  • Matthew Guidry
  • mbd
  • Michael D'Angelo
  • Mikkel
  • mileswaldron
  • mister_rf
  • Neil Foster
  • Nick de Smith
  • Nick Soroka
  • nicklenorp
  • Nik
  • Norman Stanley
  • Patrick Coleman
  • Paul Brodie
  • Paul Jordan
  • Paul Montgomery
  • Ped
  • Peter Krogen
  • Peter Terren
  • PhilGood
  • Richard Feldman
  • Robert Bush
  • Royce Bailey
  • Scott Fusare
  • Scott Newman
  • smiffy
  • Stella
  • Steven Busic
  • Steve Conner
  • Steve Jones
  • Steve Ward
  • Sulaiman
  • Thomas Coyle
  • Thomas A. Wallace
  • Thomas W
  • Timo
  • Torch
  • Ulf Jonsson
  • vasil
  • Vaxian
  • vladi mazzilli
  • wastehl
  • Weston
  • William Kim
  • William N.
  • William Stehl
  • Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Forums
4hv.org :: Forums :: Tesla Coils
« Previous topic | Next topic »   

Need help with my miniSSTC again

Move Thread LAN_403
Mads Barnkob
Sun Mar 06 2011, 02:46PM
Mads Barnkob Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
謝昕哲 wrote ...

Mads Barnkob wrote ...

Any news on your coil?

It is still the same.I'm now building a DRSSTC.
I want to know why steve wards can get 9 inch sparks with it but I only get less than 10 cm?

Because you do not seem to posses the devotion and patience to learn enough about electronics in this particular Tesla coil before giving up on it and moving on to do something much more complicated.

You need to take your time and get one coil to work at a time, in your style you will see more disappointment than success and properly give up on the high voltage as a whole...
Back to top
hsieh
Tue Mar 08 2011, 12:16AM
hsieh Registered Member #1412 Joined: Thu Mar 27 2008, 04:07PM
Location: Taipei Taiwan
Posts: 278
Mads Barnkob wrote ...

It is still the same.I'm now building a DRSSTC.
I want to know why steve wards can get 9 inch sparks with it but I only get less than 10 cm?
[/quote1299422670]

Because you do not seem to posses the devotion and patience to learn enough about electronics in this particular Tesla coil before giving up on it and moving on to do something much more complicated.

You need to take your time and get one coil to work at a time, in your style you will see more disappointment than success and properly give up on the high voltage as a whole...


Many people,told me the same thing.I know this may be the problem.
I should optimize this coil before trying something more complicated.

So what should I do next to fix this coil?

My MOSFET gets hot fast.10 second of running make it too hot to touch.
Originally I use IRFP460.Then I replace it with IRFP250.At that time I guess the lower Rds(on) may help,but it gets hotter.

At that time I use a secondary 17cm tall 11cm in diameter(not on the picture).with 500turns of 31awg wire.Topload is a ring slightly bigger than the diameter of the secondary.Primary is wind on secondary on the same PVC tube.
Back to top
hsieh
Wed Mar 09 2011, 01:02PM
hsieh Registered Member #1412 Joined: Thu Mar 27 2008, 04:07PM
Location: Taipei Taiwan
Posts: 278

1299675576 1412 FT109066 Dscn8040


Waveform on MOSFET pin G and S.
Back to top

Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob

Go to:

Powered by e107 Forum System
 
Legal Information
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.