Re: Help, to much power draw with MMC

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

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

Motor run capacitors make current limitors in series. Each 10u F provides
about 1 amp uf 60Hz ac current.
  Robert  H

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Fri, 29 Mar 2002 18:33:40 -0700
> To: tesla-at-pupman-dot-com
> Subject: Re: Help,  to much power draw with MMC
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Fri, 29 Mar 2002 18:34:13 -0700
> 
> 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
>> 
> 
>