Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx> At 05:56 PM 11/21/2006, you wrote:
Original poster: "Chip Ford" <chipford@xxxxxxxxxxxx> So you are saying even though Maxwell rates these caps at 500 PPS (pulses per second), They are really one pulse per second caps? Does everyone agree? Has those that have used these caps been disappointed. Would I be better off listing them on ebay and selling to the next sucker before I destroy them?
is that 500 pps at 10% VR (voltage reversal) or 500 pps at 90% VR.. the latter is more representative of TC duty.
Also, what's the rated shot life. At 120 pps, you can run through 1E5 shots in less than 20 minutes of running. How many shots do the caps have already? (i.e. are they maintenance pulls from some piece of equipment?)
There's also some other performance parameters to be aware of. RMS current is something that you can exceed (destroying the capacitor) while staying within the other limits.
http://home.earthlink.net/~jimlux/hv/caplife.htm has a bit of a discussion about life.
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx> To: <tesla@xxxxxxxxxx> Sent: Tuesday, November 21, 2006 2:22 PM Subject: Maxwell 37667 pulse caps > Original poster: "MIKE HARDY" <MHARDY@xxxxxxxxxx> > > Much has been descussed concerning the infamous 37667 maxwells. > I think the general consensus is that these are 1 pulse/sec caps, and > therefore are a bad choice for coiling. Many list members report > blowing them up. I bought 5 of them a few years ago in preparing > for my big coils. I ran a pair in series with an NST powered coil, > and had no problem, most likely because I way underrated them. > Anyway, since another 'new' coiler just purchased a couple, it might > be a good idea for Terry, to post a warning on the list index about these > caps, so more of us don't unknowingly buy these, only to blow > them up. What do others think? > >