Re: EEMMC test :-))

• To: tesla-at-pupman-dot-com
• Subject: Re: EEMMC test :-))
• From: "Gregory R. Hunter" <ghunter-at-accucomm-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 23 May 1999 09:01:52 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Terry,

Where are you buying your caps?  I've got both a Mouser and a DigiKey
catalog, and poly/foil caps are prohibitively expensive.  For the price of
building up one .02uF MMC, I could build three .02uF rolled poly caps.
Unless I find a cheaper source, I'm afraid the MMC bandwagon is going to
pass me by.

Cheers,

Greg

At 08:22 PM 5/22/99 -0600, you wrote:
>Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
>
>Hi All,
>
>	I did a fun thing.  I wired eight of my 1600 volt poly caps up to make a
>28nF 6400 volt cap.  I then hooked it to my LTR prototype coil and cranked
>to power up to about 10-15kV peak input voltage for about two minutes.  The
>streamers were about 1.5 to 2+ feet long on a not well tuned coil.  The cap
>was only a little warm ( ~5 C )after the run!  
>
>	I was not too concerned about the RMS current or heating but the voltage
>stress was right at the edge!  However, the cap seems fine!  The fact that
>it survived at all, shows that these caps are pretty darn tough!  I would
>have gone higher but I chickened out!
>
>	A picture of the cap is at:
>
>www.peakpeak-dot-com/~terryf/tesla/misc/EEMMC.jpg
>
>Of course, this is definitely not recommended for reliability.  But 28nF
>for $17 bucks...
>
>Cheers,
>
>	Terry
>
>
>

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