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 #2617
Joined: Sun Jan 10 2010, 09:52PM
Location:
Posts: 6
i am helping a friend with a project for his science of sound class and we decided to build an audio modulated tesla coil. i have been looking for a wiring diagram to run a ignition coil or flyback with the signal coming from an mp3 player or something of that sort. i havent had any luck finding a good schematic that works. if anybody has any plans for the driver circuit that they know works their help Would be Greatly Appreciated.
Registered Member #2617
Joined: Sun Jan 10 2010, 09:52PM
Location:
Posts: 6
no sorry this isnt brandon but if he figures his audio modulated coil out tell him to post! :)
i came across a similar design to the one below controlled by a 555 timer instead of an audio jack Does anybody have any opinions on wether this schematic below will work.
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
umm... I would say no that wouldn't work.
There is no primary oscillation source, you need a carrier freq that you then modulate with audio to get sound. I would go with a 555/MOSFET driven flayback, It makes a good sized arc (1 to 2 inches) is easy to build and all you have to do for audio modulation is send the audio in to pin 5 of the 555 timer.
This is a good exaple circuit ive built it once befor and it works ok:
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
just wondering, the connection from pin 7 on the 555 is connected to a 50k potentiometer on the +12v side and the wiper right?
Yea, that is right. You could just connect it to the wiper, which is connected to 12v, but we usually connect the wiper to one end of the pot. No real reason, really.
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
Arcstarter wrote ...
just wondering, the connection from pin 7 on the 555 is connected to a 50k potentiometer on the +12v side and the wiper right?
Yea, that is right. You could just connect it to the wiper, which is connected to 12v, but we usually connect the wiper to one end of the pot. No real reason, really.
Yes that is right I don't know why we do that. Just looks nice I gess.
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.
Audio Modulated SSTC
