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Re: Toroid, Humidity, New Coil
Tesla List wrote:
>
> Subscriber: erc-at-coastalnet-dot-com Thu Jan 23 22:50:36 1997
> Date: Fri, 24 Jan 1997 00:02:43 -0400
> From: "George W. Ensley Jr." <erc-at-coastalnet-dot-com>
> To: tesla-at-poodle.pupman-dot-com
> Subject: Toroid, Humidity, New Coil
>
> Group,
>
> After making a few mistakes with my first TC i built a 6" coil using
> information gleaned from this list. What a success, 4.5 feet right out of
> the gate with 1.4 KVA. I hope some tuning will prove as fruitful.
>
> In the process of getting the new coil together I built a 19"x4.5" toroid.
> I immediately noticed that breakout didn't occur until about 80% power, well
> after the gap had begun to fire. The temperature was in the twenties and the
> humidity was low.
>
> Now that it has warmed up a bit the humidity is higher and the toroid breaks
> out as soon as the gap begins to fire, 60% power or so. Can it be that the
> humidity is solely responsible for this or am i overlooking something else.
>
> (((())))
> | |
> | |
> \\\\\\//////
> -.. . -. ....- --.. .--. --- --. . --- .-. --. . . -. ... .-.. . -.--
> GEORGE W. ENSLEY
George,
Congratulations on your latest coil! Humidity and temperature can affect
coil operation. Moist air will tend to break down somewhat more easily.
However, if your coilform absorbs some of this moisture, the leakage
current may lower your output voltage enough to inhibit breakout. If
your toroid is optimally sized to your coil, it will just barely break
out - sounds like yours is close! I found my coil likes very cold, dry
days the best! Just for grins, you may want to try a similar toroid made
from 6" ROC material to see if you can get a little more hold-off before
breakout.
Safe coilin' to you, George!
-- Bert --