Thread: Help with custom circuts
View Single Post
  #7   Spotlight this post!  
Unread 08-02-2008, 22:45
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: 10,795
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: Help with custom circuts
Iceman,
In addition to all the great advice above (Nice catch Alan on the CIM motor in the diagram above) you will not find any limit switches capable of handling the immense current that is a stalled CIM motor (133 amps). The rules are written to protect against things like this.

BTW, even if allowed, the diode in the bottom branch circuit will not conduct even if the relay pulled in. It will remain reverse biased since the anode is at a lower voltage than the cathode.
__________________
Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
________________________
Storming the Tower since 1996.
Last edited by Al Skierkiewicz : 08-02-2008 at 22:47.