GrrlScientist is an evolutionary biologist, ornithologist, aviculturist, birder and freelance science and nature writer. A native of the Pacific Northwest, she relocated from Seattle to NYC with her parrots after earning a BS in Microbiology (emphasis in Virology) and PhD in Zoology (Ornithology) from the University of Washington. In NYC, she was the Chapman Postdoctoral Fellow at the American Museum of Natural History for two years, pursuing part of her "dream" research project by reconstructing a molecular phylogeny of the parrots of the South Pacific islands. GrrlScientist has written a blog about science since 4 August 2004 (the early years are archived 
tags: singing Tesla coil, streaming video
This video shows a solid-state Tesla coil that is "singing". The high voltage sparks are making the noises. Every cycle of the music is a burst of sparks at 41 KHz, triggered by digital circuitry at the end of a "long" piece of fiber optics. The primary run that you see in the video are at its resonant frequency in the 41 KHz range, and is modulated by a control unit in order to generate the tones you hear.
What's not immediately obvious in this video is how loud this is. Many people were covering their ears and dogs were barking. In the sections of the video where the crowd is cheering and the coil is starting and stopping, you can hear the the crowd is drowned out by the coil when it's firing.
This Tesla coil was built and is owned by Steve Ward. Steve is a EE student at U of I Urbana-Champaign. [2:42]
Comments
Looks VERY impressive. Steve is either a genious or he's simply mad... Let's see his future works and decide :-)
Posted by: Lucy | August 17, 2007 9:45 AM