I was running my Tesla coil a couple of 3 years ago...on top of a 8" thick
granite surface plate (read...nice flat surface to catch all that would fit
on it). Over the noise of the rotary spark gap I started to hear an odd
snap/spark that was not in sync with the spark gap....found out that one of
my black box containers (read ESD safe) was too close to the wire that went
from the spark gap to my DYI capacitor, nice 2" arc. Well I caught it in
time before it got hot enough to melt the container...just a few char
marks...I was using an oil burner ignition transformer @ about 7.5kv.
Oh, I could light a florescent bulb at about 10 to 15 feet away with
it....Darn I miss the smell of ozone in the morning..... :-)
Ken
N4zed
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Steve Bookout
Sent: Monday, October 07, 2013 6:25 PM
To: ka4inm@gmail.com
Cc: amps@contesting.com
Subject: Re: [Amps] Rubber Mats ( was Direct rectification of AC mains to
drive the amp, )
Along a similar line...
I fought poor performing Beverage antennas for abt 2 years, before I found
the problem. The black plastic boxes I used to house the transformers at
the antenna feed were conductive. I put the stainless hardware directly
thru the plastic, after all it WAS plastic!
Found out that these boxes were Delux Lista brand parts bins for their Line
of cabinets. They had carbon in the mix because they were intended for
storing static sensitive components.
Check EVERYTHING!
73 de Steve, NR4M
On Oct 7, 2013, at 12:00, Ron Youvan <ka4inm@gmail.com> wrote:
> On 10/07/2013 11:06 AM, donroden@hiwaay.net wrote:
>
> /*snip*/
>> I insulted it off the concrete floor with 1 foot wide rubber mats.
>
>> It neasured 30 ohms to AC power common.
>
>
> > Turns out that there was enough carbon black in the rubber for it to be
conductive.
> /*snip*/
>
> A friend asked me to test the vinyl jacket on common RG-8/U to see how
good an insulator it is, because I have a Hi-Potter (to 45 kV) at work. I
couldn't test it, it is way too leaky to test, obviously for the same
reason.
> --
> Ron KA4INM - Youvan's corollary:
> Every action results in unwanted side effects.
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4142 / Virus Database: 3604/6730 - Release Date: 10/07/13
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4142 / Virus Database: 3604/6730 - Release Date: 10/07/13
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|