Thread: Victor Burnouts
View Single Post
  #23   Spotlight this post!  
Unread 28-04-2004, 10:58
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
Posts: 10,798
Al Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond repute
Re: Victor Burnouts

Guys,
Static of sufficient energy to kill FETs would have been causing problems everywhere else, too. These FETs have internal protection to prevent damage (zener diodes) and are part of a circuit board where 12 FETs live. For only one quadrent to die from static is unlikely. It is still a big puzzlement though. For only one quadrant to fail (Not two opposite quads) then there had to be something wired incorrectly in the external circuitry. Something like one of the battery leads going to the motor and the other going through the controller. This could put full battery voltage across one quad set but not destroy anything else. It seems so unlikely though since the wiring error that would cause this would be easily diagnosed. It could happen, just not high on my list of possibles. It may remain a mystery for the rest of eternity.
__________________
Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
________________________
Storming the Tower since 1996.