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Help me to choose capacitors for MMC



Original poster: Tomas Stankevic <Tomas.Stankevic@xxxxxxxx>

I'm going to buy capacitors for making MMC. should choose from ELFA catalogue. http://www.elfa.se/en/. I want to use 3 500W NSTs in parallel, so I need about 40-50 nF for at least 10 kV. Later I will need one more MMC for my bigger coil but I dont have transformer for it yet..

Please help me to choose which type of capacitors should I buy.

Thank you

Tomas





Tesla list wrote:
Original poster: "Anthony R. Mollner" <penny831@xxxxxxxxxxxxx>

I want to know more about using an internal primary. It seems like it would
be over coupled but, I have no idea really. How is the coupling figured out
with an internal primary?

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Tuesday, April 10, 2007 6:33 PM
To: tesla@xxxxxxxxxx
Subject: [PHISH] RE: Tesla coil on Ebay; 80-300' lightning?


Original poster: "Hans Schattenmeister" <klugmann@xxxxxxxxxxx>

Operating at 6 kW (220 X 30 Amps) you would be luck to get 80"
discharges. I remember a guy who was running a 38 kW coil and getting
55' - 105' arcs. The coil was 5' in diameter, had an internal primary
and stood about 25' tall.









>From: "Tesla list" <tesla@xxxxxxxxxx>
>To: tesla@xxxxxxxxxx
>Subject: Tesla coil on Ebay; 80-300' lightning?
>Date: Sun, 08 Apr 2007 18:56:27 -0600
>
>Original poster: "M G" <gt4awd@xxxxxxxxx>
>
>Sometimes I check ebay "Tesla coil" to see if there is anything new
>that I would like to get. While searching I run into an auction
>where a coil is being sold for just about $15,000. The description
>says that it can create verticle streamers 80-300' straight up in
>the air. Looking at the coil you can see the primary does not have
>that many turns, and considering the secondary is so large, the
>capacitor must be huge. I have my doubts that this coil can create
>streamers that long using only 220volts at 30amps. It also seems
>that this coil is being sold to anyone willing to pay the high
>price, regardless of electrical knowledge, which is a bad idea in my
>opinion. Here is a quote of the entire description.
>
>http://cgi.ebay.com/Giant-Megavolt-Tesla-Coil-for-Special-effects-HUGE_W0QQ
itemZ220099893593QQihZ012QQcategoryZ4665QQrdZ1QQcmdZViewItem
>
>"Do not turn on near airports or other sensitive installations.
>Generates Giant Lightning bolts from 80 to 300 feet tall going
>straight up. Uses 220 volts single phase at 30 amps. Noise will wake
>the dead. Might bring them back to life to, dont know for sure but
>dont try it to be sure.. I will not help you re-bury anyone you
>re-animate. This is not a toy. Buyer will be responsible for pickup
>and transportation. This was custom made for my boss by the same guy
>who builds them for Hollywood Special effects people in the 80's.
>Built into Mahogony wood furniture, control will support remote
>activation ( while under cover ). Comes with various books, papers,
>letters and a hard back rare collectable Tesla book too. This is not
>somthing you will see again in your lifetime. No its not UL
>approved. Resulting display can give goosebumps, make women flee and
>children to become incontinent. Use proper discretion when
>activating, recomend out someplace away from everything important.!
>Does set off EMP detectors at the Feds Nuclear Monitoring stations,
>it looks like a 10-15 ton nuke going off on the detector. Have fun."
>
>----------
>Create and Share your own Video Clip Playlist in minutes at Lycos
>MIX (<http://mix.lycos.com/?if_Event=MAILmixtagline>http://mix.lycos.com)
>

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