Re: [TCML] SISG DOPE?

[FIFTYGUY@xxxxxxx]

In a message dated 7/5/08 5:24:21 P.M. Eastern Daylight Time,  
evp@xxxxxxxxxxx writes:

>Need maybe 3 kV breakdown and capacitor is only 0.004 ufd so peak  

>current won't be too high.  
 
    At only 4kV, you could use just one of Mark  Dunn's SISG-4 boards. Maybe 
even use the cheap 270V SIDACs that they've been  selling on eBay (since 
everybody is out of stock on the 300V ones until  August). 
    I modeled your coil from what you have posted  here in the past. At only 
3kV on 4nF, I suspect you're getting less than 12"  arcs? Perfectly fine for 
tabletop experimentation, but primary current will be  so low (~50A peak, ~2A 
RMS) that you could use *much* cheaper IGBTs than  the ones we've been abusing 
and they'll stay ice-cold without a fan. For that  matter, you could probably 
save a few bucks by going to smaller  heatsinks as well. Heck, you might end 
up running the IGBTs *within* their  design parameters!
    Make sure your rectifier is plenty tough. 
 
>Where is the appropriate information  archived?




Have you checked the archives? ;)
 
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-Phil LaBudde
Center for the Advanced Study of Ballistic  Improbabilities



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