Re: MMC Design Question

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

Original poster: "Kurt Schraner by way of Terry Fritz <twftesla-at-qwest-dot-net>" <k.schraner-at-datacomm.ch>

Terry, Gregory, All -

I've removed the life expectancy calculation from the Excel. The
corrected version can be had under:

http://home.datacomm.ch/k.schraner/MMCcalc2xls.zip

may be Terry would replace the copy on http://www.hot-streamer-dot-com by
the revised version?
(BTW: I didn't find it anymore)

The example of the revised Excel is with the 0.068uF/1600V ERO caps of
Mike Tucknott's bulk buy, as used by a number of our British friends.
Their parameters for TC use have been tested recently (March 1st 2002)
by Terry, as well as those of the 0.033/6kV FKP1 Wima caps (relevant
part of Terry's results-posting pasted into the Excel-spreadsheet, at
the bottom of the calculations).

Cheers,
         Kurt Schraner

Tesla list wrote:
> 
> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
> 
> Hi Gregory,
> 
> The equations are mine but I did not write the excel thing.  I think it was
> Kurt.
> 
> The life expectancy as calculated using the equations in:
> 
> http://hot-streamer-dot-com/TeslaCoils/MMCInfo/MMCPower4.html
> 
> Has proven to be very inaccurate and of little value.  You can ignor it.
> The voltage and especially the current is what matters.
> 
> Cheers,
> 
>         Terry
> 
> At 07:52 PM 4/2/2002 -0500, you wrote:
> >Hello List,
> >
> >I just gave Terry's Excel MMC Calc a try for the first time
> >(http://www.hot-streamer-dot-com). I am concerned about the life
> >expectancy it gave the MMC I would like to build. It seems that the
> >sheet's "best price for fully safe design" indicator doesn't take
> >life hours into account. The arrays returned using my specs had an
> >estimated life of 0 hours! Has this life estimate proven to be
> >accurate?
> >Here are the specs I am working with. If another of you can try to
> >run this and give a recommendation, I would really appreciate it.
> >
> >RMS Voltage: 22 kV
> >Amperage: 400 mA max
> >Capacitance: 50 nF
> >Break rate: 120 bps
> >Using Geek Caps 0.15uF/2000VDC/500VAC
> >
> >I already have 33 of the Geek caps, this redesign is to compensate
> >for a new, higher-power HV supply (8 kVA). If possible, I would like
> >to build on this prior investment. Should I just start saving money
> >for a commercial cap?
> >
> >Thanks, all, for your help and dedication to the community!
> >Gregory
> >