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.
Hello everyone! I am new to this forum and not a coiler like you guys but I am working on a wireless charger project that works with the same principle as a tesla coil. The focus of my research has been the design of the transmitter and receiver coils. Because I am not expert in electronics I really need your guys' help. I am trying to use Daniel Kramnik's h-bridge and drive it with Steve Ward's universal drsstc driver UD 2.7C. I have only recently discovered these two boards and am really having a hard time wiring them together and the fact that I haven't had any prior experience with tesla coil circuitry doesn't help either. Now I've been trying to learn as much as I could about these two boards but I'm running out of time. My h-bridge has to take in 110 V AC and output a square wave in 80-110 Khz range. I have to present my project in 3 weeks. Please guys I need your wisdom with these things:
- how to make the gate drive transformers for the fga60n65smd igbts on the h-bridge - what connects to the solder pads p1B, p1A p2A, p2B - what connects to solder pads s1g, s1e...s2g, s2e...s3g, s3e...s4g, s4e - how to integrate the driver board with the h-bridge in general
I would appreciate any help! Thank you in advance!
Registered Member #816
Joined: Sun Jun 03 2007, 07:29PM
Location:
Posts: 156
The labelling of the Transformers could be done clearer P1A /P1B primary of transformer one. P2A/P2B primary of transformer two. S1G /S1E would be secondary 1 gate and secondary 1 local earth(ground) these are not in any way actually grounded, perhaps would be better labelled as source. Here’s where it also gets additionally confusing it is not clearly stated which secondary pairs actually belong to which transformer. Looking at the schematic it seems both Transformers while driven from separate drivers are driven from the same logic outputs, effectively meaning the two Transformers are driven with the same phase, this makes it simpler as you can relabel them yourself. For example Transformer T 1, secondary 1, driving MOSFET S1 GS . T1, secondary 2 driving MOSFET S2 GS . Obviously secondary one and secondary two need to be 180° out of phase. Repeat for T2 MOSFET s3 and s4 , remember the relative phases of the two Transformers are also important as MOSFET s1 and s4 need to be conducting together likewise s3 and s2 the easiest way to ensure this is just to swap the primary connections of one of the Transformers.
I would really recommend powering up the gate drive board first, and confirming the phases are correct at the gates with a two channel oscilloscope before applying mains power to the H Bridge board. Important Note remove all the scope ground leads from the H Bridge before applying power to that board as there is no isolation there. Finally the gate Transformers appear to be driven from 24 V full Bridge drivers this may be too high for a 1:1 transformer so probably intended for 2:1:1 ratio transformer i.e. + / - 12v gate voltage. I hope I’ve made sense.
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.
Wireless transfer using UD2.7
