[TCML] ANOTHER ONE DOWN, ANOTHER 37667 BITES THE DUST

["MICHAEL HARDY" <mhardy4@xxxxxxxxx>]

When I first decided to build a pig powered coil (2004 ), I searched for pulse caps on the internet, and of course the infamous 37667's were everywhere. Bought 5 at $100 each. Then found out they weren't very good for TC's. I've since been running 3  TC rated Maxwell 0.2uF, 20 kV caps in series, for 0.066uF @ 60kV. This on a 14.4 kV Pt powered 6" coil system running around 4800 watts with no problem. I have recently completed a 15" coil running at about 15 kW. I used 2 banks (including the one above)  in parallel for 0.14 uF at 60 kV. I still am running the smaller coil routinely. Changing out one bank is a pain, so decided to try a pair of 37667's in parallel (0.06 uF @ 35kV). Ran good with only slight warmth to cases of caps. Short 30 sec runs with 3 minute pauses. After a half hour I saw steam from the cap bank. Checked, and one of them had split open. DON'T BUY 37667 MAXWELL'S FOR TC USE!
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