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Steve Conner

Thu Feb 22 2007, 10:52PM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

I think the quality and speed of a YouTube video depends on its popularity, because of some kind of bandwidth capping they use. If hardly anyone is watching a vid, it plays quickly with hardly any buffering. So if you want a high-quality vid that plays smoothly, make a boring vid and don't promote it. JM2C though.

Mike

Thu Feb 22 2007, 10:57PM

Registered Member #58 Joined: Thu Feb 09 2006, 05:40AM
Location: Tri-Cities, Washington, US
Posts: 317

I have found that if there is one thing Microsoft made right, it was the WMV codec. Compresses very fast and gets very small, perfect for online videos. I use some generic video converter called Blaze Media Pro and have it set to NTSC 384kbps or if you want better quality use NTSC 768kbps. A 3:50 minute video compressed to about 5-6mb at a pretty good quality.
So I now announce my new video, it will go on youtube.com soon but for now its on google video.

Enjoy

Duncan

Thu Feb 22 2007, 11:07PM

Registered Member #524 Joined: Thu Feb 15 2007, 03:28AM
Location: Sydney, Australia.
Posts: 21

That's a fantastic video Mike! Have you got a schematic for that coil I could have a look at?

Mike

Fri Feb 23 2007, 04:23AM

Registered Member #58 Joined: Thu Feb 09 2006, 05:40AM
Location: Tri-Cities, Washington, US
Posts: 317

yeh sure do

and

Build the disrupter and hook the output of the ucc to pin 2 of the fod2200 and the ground of that circuit to the pin3 of the fod2200.
Do NOT use same power supply for the Fod2200 chip and the ucc/transistor. I used a 9v battery to power those. The fod2200 can be run off the same supply you run the ucc's off of (5v though, so throw in a regulator)
Steve W helped me understand how it worked, its basically the audio goes into the disrupter which converts the audio to a squarewave somewhat, then that goes to the Fod2200 chip which is an optoisolater and then you hook the output of the fod2200 up to the enable pins of the ucc's. If you dont get arcage at first, use a scope and check places around, you will have to vary settigns quite a bit to find the waveform , since its kinda odd. Also, tweak that pot alot, sometimes if its set to far off there will be no arcs.
Make sure on the disrupter.jpg that instead of hooking the outp 18ohm resistor and ground to an led, hook it to the pins 2 and 3 of the fod2200.
Thanks to Joe(epilektrik) and Sam (smlizz) for the circuit. It is really nice

[/Thread Jacking]

WaveRider

Fri Feb 23 2007, 08:46PM

Registered Member #29 Joined: Fri Feb 03 2006, 09:00AM
Location: Hasselt, Belgium
Posts: 500

After seeing some of the great videos posted by others, I am almost ashamed to draw attention to myself...but ego always wins in the end

Here's my audio modulated HF tesla coil prototype.

When I find the time, I would like to make a more aesthetically (visually) pleasing version.

Heres a short vid of me firing my 2-stage coilgun.. Weeeeeee!

Cheers!

Tom540

Tue Feb 27 2007, 06:15PM

Banned on 3/17/2009.
Registered Member #487 Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617

I just added another video of my 13" SSTC
http://www.youtube.com/watch?v=3T1H9vVHsgg

Myke

Wed Feb 28 2007, 04:36AM

Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969

Here are two vids of my ZVS flyback running at 12 and 24V.

For some reason the sound is lagging behind the visual.

CT2

Wed Feb 28 2007, 06:32AM

Registered Member #180 Joined: Thu Feb 16 2006, 02:12AM
Location: Ontario, Canada
Posts: 187

SSTC
Mini SSTC
An animation made in grade 10 media class.

J. Aaron Holmes

Fri Mar 02 2007, 03:09AM

Registered Member #477 Joined: Tue Jun 20 2006, 11:51PM
Location: Seattle, WA
Posts: 546

Finally got around to signing up on YouTube, and I just uploaded a video of my old 3.5" coil running during a gap test. It ran pretty well, considering it was made mostly from junk. It has since been disassembled. About the only part of it I was proud of was the topload sphere made from two 14" Ikea mixing bowls that I actually bothered to weld together (no feeble aluminum tape for me!!

http://www.youtube.com/watch?v=mAuxXUkUGpk

In the video, you can hear the breakrate go up and see the streamers start to jump around more as the power goes up. At a full 1kW input, the streamer would exceed four feet in length, which was more than twice the length of the secondary winding. I had to run with a breakout point on top or the secondary would flash over from top to bottom. The primary was a helical wound on a plastic bucket sitting directly on the floor of my garage, and the primary was perched on a ceramic flower pot inside the bucket

Regards,
Aaron, N7OE

GreySoul

Sat Mar 03 2007, 12:17AM

Registered Member #546 Joined: Fri Feb 23 2007, 11:43PM
Location: Albuquerque, NM
Posts: 239

I also havwe my MMC and sparkgap posted....

-Doug

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