New Tesla Coil Science
alan sailer, Thu Apr 14 2016, 04:00PMThese researchers are using a small telsa coil to create a self-assembling array of carbon nanotubes. The array is used to light up some LEDs since the coil induces a voltage on the linked tubes that is enough to turn on the LEDs.
Personally I think they just wanted to get paid for messing with a tesla coil...
Cheers.
Re: New Tesla Coil Science
Nik, Mon Apr 18 2016, 11:41AM
I wonder if this would work with other conductive granules. Their nano-tubes didn't look to be in particularly fine particles so this might work with regular graphite.
Nik, Mon Apr 18 2016, 11:41AM
I wonder if this would work with other conductive granules. Their nano-tubes didn't look to be in particularly fine particles so this might work with regular graphite.
Re: New Tesla Coil Science
GrantX, Mon Apr 18 2016, 02:10PM
Interesting article. I guess by "reconfigure" they meant using a CW driver of some kind, since they needed the strong electric field? It's odd that the coil only had one lead connected to the primary, as can be seen in the both the photos and video. At first I thought they had simply disconnected it for safety during the photo shoot, but it's clearly visible in the video while the coil is live.
GrantX, Mon Apr 18 2016, 02:10PM
Interesting article. I guess by "reconfigure" they meant using a CW driver of some kind, since they needed the strong electric field? It's odd that the coil only had one lead connected to the primary, as can be seen in the both the photos and video. At first I thought they had simply disconnected it for safety during the photo shoot, but it's clearly visible in the video while the coil is live.
Re: New Tesla Coil Science
Hazmatt_(The Underdog), Tue Apr 19 2016, 01:25AM
Their primary side driver amplifier most likely does not have a low enough output impedance to drive a primary, most amplifiers do not.
For very low impedance applications like this one they need to use the matching transformer to match their amplifier to the primary.
The other option of course is driving the primary as a quarter wave resonator at the same Fo as the secondary, and ignore the reflected power loss.
Hazmatt_(The Underdog), Tue Apr 19 2016, 01:25AM
Their primary side driver amplifier most likely does not have a low enough output impedance to drive a primary, most amplifiers do not.
For very low impedance applications like this one they need to use the matching transformer to match their amplifier to the primary.
The other option of course is driving the primary as a quarter wave resonator at the same Fo as the secondary, and ignore the reflected power loss.
Print this page