[TCML] SISG circut question

[FIFTYGUY@xxxxxxx]

Terry-
 
    Thanks for the IGBT's!
 
    At work I had to repair a blown PLC power supply,  and in the process of 
ordering parts, I looked hard at the spec sheets  for TVS diodes. Some of 
these things have capacitances of a few  nF!
 
 _http://www.microsemi.com/micnotes/110.pdf_ 
(http://www.microsemi.com/micnotes/110.pdf) 
 
    Does this affect the timing of the SISG? Maybe  explain the deviation 
from the theoretical values you calculated? Not that it's  difficult to tweak or 
anything. But I'm not an "electronics guy", so I wondered  if you had already 
accounted for the effect if it made a difference.
 
    Got my SIDACs from Mouser yesterday. It's not fun  repairing the boards 
when the leads have become welded into the solder pads, and  the fiberglass has 
been cratered under the traces. 
 
-Phil LaBudde
Center for the Advanced Study of Ballistic  Improbabilities



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