#11164 NORM 1.75-ha: Darfon power supply tripped?
    Zarro Boogs per Child 
    bugtracker at laptop.org
       
    Tue Oct 11 23:34:44 EDT 2011
    
    
  
#11164: Darfon power supply tripped?
-----------------------------------+----------------------------------------
           Reporter:  tonyforster  |       Owner:  wad          
               Type:  defect       |      Status:  reopened     
           Priority:  normal       |   Milestone:  1.75-hardware
          Component:  hardware     |     Version:  not specified
         Resolution:               |    Keywords:               
        Next_action:  reproduce    |    Verified:  0            
Deployment_affected:               |   Blockedby:               
           Blocking:               |  
-----------------------------------+----------------------------------------
Comment(by tonyforster):
 I have a variac, so the charger and laptop are out in the shed on 278V, we
 will see what happens.
 This is only one charger so this may not be significant, I may be just
 unlucky to get a dud charger. However if the Darfon charger is more likely
 to trip out with bad voltage regulation, it will cause a lot of problems
 in the target market.
 Though the distribution code allows +50% for 10 seconds, I doubt that I
 have been getting >260V overnight.
 The problem is more likely to be the crowbar tripping and this would
 probably result from switching transients more than overvoltages.
-- 
Ticket URL: <http://dev.laptop.org/ticket/11164#comment:18>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system
    
    
More information about the Bugs
mailing list