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RE: "Enhanced" Multi Mini Capacitors

Hi Gary,

	Very true!  If a coil system fired at greater than 120 BPS, one may have
to use more caps to keep the RMS current within a safe range.  One really
has to look at the RMS current and decide how many and how hard the caps
can be pushed.  In some cases, you may still be ok with a large primary
inductor.  

With these MMCs we can actually design for such things...  The voltage
seems like no big deal.  The RMS current is critical!!
I don't recommend wiring in parallel after today's test since it defeats
the self healing feature which may be of some use.

Cheers,

	Terry


	

At 11:10 AM 5/22/99 -0400, you wrote:
><snip>
>>        I ran controlled current tests through it tonight at full power 
>using a
>>primary circuit without a secondary in place.  It didn't blow up! :-)  The
>>thermal heating was right where all the data said it should be.  I could
>>control and measure the RMS current going through it in the primary circuit. 
>>In a real coil, it should run just barely warm to the touch.  I over load the
>>voltage rating  but these things are pretty underrated and everyone say the
>>will be fine.  The capacitance didn't change even though I ran it at
twice its
>>dissipation for about 15 minutes.  It is limited to 120BPS unless the circuit
>>will be designed to keep the dissipation below a watt.  However, it
really has
>>plenty of headroom before it should blow up.
>
>Unless one uses a sync RSG, it will be difficult for most users to
>observe the 120BPS limit.  As the cap size simulations on my web page show,
>most static gap configurations will result in multiple bangs per mains
>half cycle, greatly exceeding the 120BPS mark.  For a 15KV/60mA NST with
>a 20KV static gap, one would need about 15nF, or three of the EMMC's, for
>the cap to limit the BPS to near 120.  Still a bargain compared to rolled
>poly or commercial caps though.
>
>Regards, Gary Lau
>Waltham, MA USA
>http://people.ne.mediaone-dot-net/lau/tesla/tesla.htm
>