Re: The MMC debate continues . . . . . .

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terrell Fritz <terrellfone@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

There is NO(!!!!!!!!!!!!!!!!)  G** D*** "DEBATE" !!!!!!!!!!!!!!!!!!!!!!!.......

TUV, UL, CSA, CE... and "ALL" the other "Mickey Mouse" organizations 
for SAFETY will tell you...  They "ALL" have "standards" for high 
energy storage caps...  Discharge times are based on the expected 
times of a person gaining access to the lethal voltages and the 
expectation of those voltages being "drained off" in that time 
frame... That accounts for "any" circuit failure...  As Batwoman used 
to say 20 years ago "it's no joke!!!!!!!!!".  If you want to save $1 
in "not" draining high energy caps at the expenses of the lives of 
your customers, fry in jail for the rest of your life for homicide 
you a**hole...

The "trend" of those standards is very clear....  If you want to be a 
"cowboy", hang by your own d*** rope...  If you "dare" to make 
"products" in the HV area, "live" buy the "international standards" 
that are very well thought out and very well adhered too by 99.9% of 
the world out there..............

I hate to be "DIRECT", but we "play" with machines that are able to 
"kill with spectacular ease"...  The goal is to "never hurt anyone", 
EVER!!!!!!!!!!!!!!...

PIRANHA-III is working on the "fourth" level of human 
protection....  Not because it is "just a good idea", but because 
that extra level of safety is "possible'...

Terry



At 10:34 PM 2/16/2007, you wrote:
> Original poster: "resonance" <resonance@xxxxxxxxxxxx>
>
> I have played with AC powered TCs for nearly 45 years now and I have 
> never ever had a shock from a small, medium, or large TC that runs 
> on AC.  I recall Ed Wingate has issued warnings where he has had bad 
> experiences with dual cap "equi-drive" systems, but I have not used 
> this type of drive so really can't comment on it.
>
> Some of the VTTCs use rectification and Terry's Piranha MOT coil 
> uses rectification with the MMCs so you would certainly always use 
> bleeders on this design.
>
> Terry F. has also reported some storaged charges on MMC caps so I 
> certainly don't want to discourage anyone from using the bleeders, 
> but I have never found any charge on some of the smaller MMC style 
> commercial coils we produce.  Both Matt and I have never received a 
> shock from an AC MMC coil nor have any of my approximately 60 
> customers of MMC small coils.  Many of these units are used in 
> science museums 7 days per week and sometimes up to three 
> performances per day.  The operators and techs put the coil away and 
> usually clean them at least once per day and so far, no reported 
> shocks from cap storage.  These are all strictly NST and AC powered coils.
>
> Best to error on the side of caution if you have any doubts.
>
> I would suggest using a small ground probe with an NE-2 neon bult to 
> "test" the caps and check them after use in your particular coil 
> design.  If after dozens of operations, and no stored charge found, 
> I think it would be safe to discontinue such tests.
>
> Be safe!
>
> Dr. Resonance
>
> > Dr. R- as I recall you told me once that you don't use bleeders on 
> > MMC banks and they aren't necessary.  Have you changed your view or 
> > does this just apply to VTTC coils?