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.
Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
My problem was, I am able to get atleast 9" spark from my 300khz 10" drsstc, but without self tuning/ feedback, pulsed interrupted, and a pair of irg4pc40u IGBTs, halfwave rectified,. my problem happens when I forgot to ground IT in earth, my fuse breaks, and when i change broke piece of my DR, (IGBT and Fast R.D.) , it did not produce any more streamers, =(,. its maximum spark is 1inch, ive checked my voltage rails and other possible in my bridge but it seems it dont have the problems,. my guess that it is my gate driving circuit,. because , before, i am using TC4422/21 driver ICs,. i was able to produce good spark for only using one TC4422 and a capacitor series as the other side of the driver. what do you think sir?Can you help me sirs??!sad
Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
Yes sir, i put a 10ohms, 2 watt resistor and when i see it on tester it seems to have no problem with it. also, i did check the zener diodes which are back to back from gate and source of the IGBTs but its not the fault also. I also tried to checked the GDT but there are no two different line shorted. and the the wires have its expected resistance so that i can know if theres a leak on it. (24 awg LAN cable). Does it have something to do with the Oscillator IC, TL494, cause it has pin like Ritchie burnett's circuit that has connection with the positive rail of the half-bridge together with some resistor (390k, 47k) & 1.8k). Cause when I accidentally misoperate my DRSSC by earth GND not connected, I saw some sparks under the PCB just beneath these resistors,. what could be the problem? Later, I will buy another TL494 IC to check if it is the culprit in the system.
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.
Help, no streamer Drsstc
what could be the problem? Later, I will buy another TL494 IC to check if it is the culprit in the system.