Re: Help, to much power draw with MMC

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi Shaun,

The NST limits its current my using bypass shunts in the core.  When it is
connected to an LTR cap, the shunts can go into saturation and the current
can increase greatly.  That is what is happening in your case and it is not
surprising.  I would be careful not to let it run like that for very long
or something may blow up.  The main core could also be saturating.

There is thinking that such an effect could be used to get far greater
power out of an NST and Gary Lau's coil seems to be doing this.  It is sort
of scarry to recommend to anybody to try but the effect is very real.
Unfortunately, little is known about it or how to control or design for it.

When you get it all hooked up to a coil, it will all work fine.  I guess I
would be very carful about hooking a cap to an NST without a spark gap and
all there.

Cheers,

	Terry
 

At 06:29 PM 3/29/2002 -0600, you wrote:
>Help guys,
>
>I just finished my MMC, readjusting my safety gaps, and other projects.
>When I connect the cap bank (0.0215 uF) to the NST and filter set up the NST
>starts to Hum loudley and so does the the variac, it vibrates, I has a meter
>on it and past  50Vac and 5amps the loud humming and vibrating begins.  I
>did this test to make sure the MMC withstands the voltage (  it better- two
>rows of 14 geek capacitors)  I measured the capacitors - sure enough 0.0215
>uF and 70Mohms resistance just like it should be.
>
>My variac, which is from a furnace control it only rated at 5 amp, so I
>bypassed the resetable fuse 8 - )   and I've pulled i'm sure 10 or so amps
>off of it.  Could this be a problems, generating harmonics ???  The other
>question is that I'm using a High power factor NST.  Its made by Allanson
>12Kv  60mA   model 455B if that means anything.  Would the capacitive
>reactance of the MMC bank and that of the PFC built in  be causing the
>current to jump up like this and making my NST HUM??
>
>I'm not sure what's wrong, any Ideas!!
>
>Shaun Epp
>