View Single Post
Old 10-08-2009, 10:40 PM   #2396 (permalink)
MPaulHolmes
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Seattle, WA
Posts: 2,553

Michael's Electric Beetle - '71 Superbeetle 500000
Thanks: 371
Thanked 297 Times in 188 Posts
The nice thing about the bootloader is that there is a CRC checksum built into the program, so that it will verify the software before turn on each time.

Hey Jack! That's interesting that it's oscillating like that on turn off. Some drivers that are dedicated to IGBTs actually set the gate to like -10v or something like that when turning it off. Mosfets I think don't much like that, but IGBTs don't mind. You could also try the "diode in series with the gate resistor" in parallel with the other gate resistor to speed up turn off. I'm mostly just worried about that LEM.
__________________
When I die, I would like to go peacefully, in my sleep, like my grandfather did. Not screaming and yelling like the passenger in his car.
  Reply With Quote