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Re: Question regarding PCB board in close proximity with Primary Coil (DRSSTC)



Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

If all else fails, just use a simple led to illuminate a series of fiber optic cables right up to the supports. No shielding required! I would have gone with fiber optics if all you want to do is illuminate the primary.
Have fun,
Bart

Tesla list wrote:

Original poster: "Daniel McCauley" <dhmccauley@xxxxxxxxxxxxxxxxxxxxxxxxxx>

Here is an interesting problem I am currently facing with one of my projects. Basically, i have a tesla coil with 6 primary polycarbonate supports which will be illuminated via LEDs (from underneath the base as shown in the attached image)
Now, i would ideally like to use a PCB board to mount the LEDs and 
this PCB board would then screw directly underneath the base where 
the LEDs would protrude through the base and up into the bottom of 
the primary supports. This keeps everything nice, neat, and compaq 
with out having six million wires all over the place.
However, the problem is that i am not quite sure how the board would 
act in close proximity with the primary coil which is only about 2-3 
inches above this PCB board.
Option 2 and 3 both seem to be the worse of the group since they 
will couple with the primary like a shorted or partial turn, respectively.
Option 1 seems like a possible alternative, but i'm not sure how 
that would work. And Option 4 with the flying leads may be the only 
feasible option.
Anyways, what are your thoughts on Option 1?

Any other thoughts or ideas you may have???

Again, my concern isn't how the PCB board would affect performance of the coil but rather it is the concern of induced noise onto the PCB board which would screw up the control voltage powering the LEDs.
Attached image shows application and possible options for PCB board
http://www.easternvoltageresearch.com/led_question.jpg

Thanks
Dan