Coil stuff etc.
Subject: Coil stuff etc.
From: chip (Chip Atkinson)
Date: Wed, 5 Oct 1994 12:45:20 +0700
>> Just got done reading your last message. Sounds like your coil
>> works pretty good. How what is the milliampres rating of your
How big is your secondary? Mine is about 12" tall.
I have either 120 or 150ma. I can't remember right now. From your
description, our power setup is very similar. Normally I am using the same
type of gap as you do: Copper pipe pieces. I have seen the giant ball
bearings in use in a TCBOR video, but since I have the copper pipe, I'll
stick with it for now. Some time I plan on modifying the pipe gap so that
there will be a positive flow of air over the pipes, which should help in
both cooling the pipe and breaking the arc. My planned modification is to
build a box with a slot large enough for the pipes to be placed perpendicular
to the slot with just the ends supported by the sides of the slot. I will put
a salvaged vacuum cleaner motor inside the box to suck air over the gaps and
vent it outside. Eventually, I plan on making a rotary gap too.
I'll give the report on it if/when each different gap is tried.
>> An electrode with a small radius produces a higher electric field at a
>> given voltage than one with a large radius, so a small, pointed
>> electrode would break down and conduct much easier than a large, flat
That may explain why I have never seen pointed gaps in any tesla coil plan.
Back to the drawing board for that ball bearing design.
>> You might look to see if there
>> are any large conductive/magnetic objects in the direction preferred by
>> the streamers that could be distorting the field (a refrigerator right
>> upstairs, etc...)?
I would bet that a 1200 lb. metal lathe, some bikes and about 200 lb. of
misc. metal stuff in the streamers general direction could indeed have some