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4hv.org :: Forums :: High Voltage
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marx generator plans

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teslacoolguy
Tue Mar 04 2008, 07:40PM Print
teslacoolguy Registered Member #1107 Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
i have 8, 3nf 35kvdc caps that are from a retired tesla coil and i was wondering if they can be used in a 8 stage marx generator along with some 1mohm 1 watt resistors to get a reasonable output. this is my 1st marx generator im building so i dont really know how it will work or if it will even work at all. it is going to be charged with a dc flyback and and i am sure there is going to be flaws in the design but that is what i have you guys for smile
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uzzors2k
Tue Mar 04 2008, 09:50PM
uzzors2k Registered Member #95 Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Use lots of 1W'ers in series to lower the voltage each individual resistor has to stand, for 35kV no less than 6 normal 1W's should suffice. I used 3x 330K 1W carbon resistors in series, wrapped in heat-shrink. They seem to have held up fine so far in a ~10kV system, and these are normal 500V resistors.
1204667430 95 FT40520 Marx Construction
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CompWiz
Wed Mar 05 2008, 02:08AM
CompWiz Registered Member #1038 Joined: Mon Oct 01 2007, 08:02PM
Location:
Posts: 96
that is also what I did but I put solder blobs in the little loops for the spark gaps
and then potted the whole thing in wax except for the gaps
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