Re: Long Pulse IGBT GDT design

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Mitchell" <electrontube-at-gmail-dot-com> 

Perhaps some optocouplers?



On Sat, 09 Oct 2004 11:39:06 -0600, Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: sparktron01-at-comcast-dot-net
 >
 > All
 >
 > Need some design guidance for a GDT for an IGBT power switch.  Need to turn
 > on for ~300usecs, off time of 1.5millisecs (PRF = 400Hz).  If drive voltage
 > is 30Vpk to pk, results in a V*t product of 9000V-usecs (typical GDT
 > product is in
 > 200-500V-usecs).
 >
 > Transformer may saturate, but will DC restore during off time so not
 > particularly
 > a big deal.  Any design guidance out there for DC restoration using
 > standard toroids for long pulse IGBT gate drive?
 >
 > Thanks!
 >
 > Best Regards
 > Dave Sharpe, TCBOR/HEAS
 > Chesterfield, VA. USA
 >
 >


-- 
Regards - Jim Mitchell