Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 51
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
No birthdays today

Next birthdays
06/27 JLaz (30)
06/28 Alessandro (32)
06/28 Andrew L. (33)
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 :: Electromagnetic Projectile Accelerators
« Previous topic | Next topic »   

auto-trigger?

Move Thread LAN_403
Camel
Mon May 11 2009, 06:30AM
Camel Registered Member #1694 Joined: Sat Sept 13 2008, 09:13AM
Location: Australia
Posts: 108
Maybe the fact that the voltage on pin 3 is equal to the supply voltage is screwing things up?
Back to top
Lem0nHead
Mon Jun 08 2009, 04:15AM
Lem0nHead Registered Member #2096 Joined: Mon Apr 27 2009, 03:08AM
Location:
Posts: 18
I didn't get much luck with LM311 and left it alone
now I'm trying again
I got the idea of using a DIAC to trigger the SCR
since DIACs usually triggers at 28V, and my capacitors charges up to 160V, maybe using a low current voltage divider is a good idea?
I was thinking about something like 10k/2,2k divisor
Back to top
Lem0nHead
Mon Jun 08 2009, 07:32AM
Lem0nHead Registered Member #2096 Joined: Mon Apr 27 2009, 03:08AM
Location:
Posts: 18
well
I just did this simulation on Link2 (File -> Import)
I used a 130V zener instead of a DIAC as I said before... but I guess that will work the same way

the problem here is that the simulator SCR triggers with min 1V and min 10mA... but mine (S6055R) triggers with MAX 1.5V and 5mA
so the current is ok, but how will I send just 1.5V? another divider after the zener?!

$ 1 5.0E-6 51.8012824668342 50 5.0 50
v 128 336 128 96 0 0 40.0 160.0 0.0 0.0 0.5
w 128 96 144 96 0
s 144 96 224 96 0 0 false
w 240 96 224 96 0
w 128 336 240 336 0
r 240 96 240 176 0 270.0
177 336 176 448 192 0 21.865274225784407 0.7833789018714512
w 448 336 336 336 0
w 240 176 336 176 0
w 240 336 336 336 0
w 240 256 240 176 0
r 336 176 336 256 0 600.0
r 336 256 336 336 0 6000.0
z 416 208 416 256 1 0.805904783 130.0
w 448 176 480 176 0
w 448 336 480 336 0
r 480 176 480 256 0 60.0
l 480 256 480 336 0 0.88 0.42163790647825933
c 240 256 240 336 0 0.0013599999999999999 47.09253565640956
w 336 256 416 256 0
o 18 64 0 35 160.0 0.4 0 -1
Back to top
Lem0nHead
Tue Jun 09 2009, 12:02AM
Lem0nHead Registered Member #2096 Joined: Mon Apr 27 2009, 03:08AM
Location:
Posts: 18
here I'm trying with 2 zeners
Link2

must say it's not being easy
Back to top
Lem0nHead
Tue Jun 09 2009, 12:49AM
Lem0nHead Registered Member #2096 Joined: Mon Apr 27 2009, 03:08AM
Location:
Posts: 18
another try... this one seems more promissing
what do you think?
Link2
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.