wow .that freq sound is fantastic. just as you think it can not go up further it does.i thought human ear could not hear above 25000 hz. what was this running at?
This Tesla coil resonates at around 56,000hz. This is of course beyond human ears as you pointed out. The coil is turned on and off between 120hz and up to 750hz or so. This is why you hear what you do. Typical SSTC's aren't pulsed and they are relatively quiet. Neat stuff. Hopefully I'll have it playing tunes shortly...
Thanks for the kind words. The interference issues are all gone now since I've switched to fiber optics for the interrupter. The output is even better now, probably due to higher stability. I'm in the works of replacing the secondary. When that's completed, I'll have a new video.
Yeah, I was powering it down. Just an example of the control. I first starting lowering the duty cycle to shorten arc length. Then I turned down the BPS. Then I gave a small spurt just to show how low you can run it. :)
My primary is 7.5 turns of 1/4" copper tubing. 9.5" I.D. It got warm after a 10 minute run. Guessing less than 100°F. Also guessing caps were less than 120°F. I only break out the infrared thermometer when things are to hot to touch. (That's about 125°F for me) The heat sink is cooled by dual muffin fans. Serious overkill. Maybe hit 10°F over room temperature. Base of the Secondary gets vewry warm. Will hafta measure that too one of these days.
wow .that freq sound is fantastic. just as you think it can not go up further it does.i thought human ear could not hear above 25000 hz. what was this running at?
aquapulsefuel 2 years ago
This Tesla coil resonates at around 56,000hz. This is of course beyond human ears as you pointed out. The coil is turned on and off between 120hz and up to 750hz or so. This is why you hear what you do. Typical SSTC's aren't pulsed and they are relatively quiet. Neat stuff. Hopefully I'll have it playing tunes shortly...
rrolison68 2 years ago
Great work! The output looks great. Congrats on an amazing coil.
bmanTCoiler 2 years ago
Thanks for the kind words. The interference issues are all gone now since I've switched to fiber optics for the interrupter. The output is even better now, probably due to higher stability. I'm in the works of replacing the secondary. When that's completed, I'll have a new video.
rrolison68 2 years ago
Very nice. Hope to do the same someday. The end was you powering it down right? and not a fluke? xD
PhxSt0rmz 2 years ago 2
Yeah, I was powering it down. Just an example of the control. I first starting lowering the duty cycle to shorten arc length. Then I turned down the BPS. Then I gave a small spurt just to show how low you can run it. :)
rrolison68 2 years ago
Neato neato!
HLSDK 2 years ago 3
wow thats nice. Any heating at all?
Tab54o 2 years ago 3
My primary is 7.5 turns of 1/4" copper tubing. 9.5" I.D. It got warm after a 10 minute run. Guessing less than 100°F. Also guessing caps were less than 120°F. I only break out the infrared thermometer when things are to hot to touch. (That's about 125°F for me) The heat sink is cooled by dual muffin fans. Serious overkill. Maybe hit 10°F over room temperature. Base of the Secondary gets vewry warm. Will hafta measure that too one of these days.
rrolison68 2 years ago
Nice!!
You should document your project construction on the 4HV forum!
bennem1 2 years ago 4
I'll do that when the interrupter issue is solved. There are some interesting quirks to this coil.
rrolison68 2 years ago