Post Reply 
HP 97 VERY hot charger
10-16-2014, 09:31 PM
Post: #4
RE: HP 97 VERY hot charger
(10-16-2014 03:30 AM)brouhaha Wrote:  
(10-16-2014 02:10 AM)Katie Wasserman Wrote:  the charger is not current limited so it's getting really hot becasue it's looking at almost a dead short

Actually the charger IS current limited. UL will not list it otherwise. However, it is current limited by the design of the transformer, not by additional components.

You're right from a safety standpoint, of course, but I was trying to explain why it got so hot. I meant that the circuit design does not limit the charging current, so it can/will overcharge nicad cells in a pack if some of the other ones have shorted out. Having 4 good cells in the pack is what prevents the transformer from getting too hot normally.


Visit this user's website Find all posts by this user
Quote this message in a reply
Post Reply 

Messages In This Thread
HP 97 VERY hot charger - Dave Shaffer - 10-15-2014, 11:17 PM
RE: HP 97 VERY hot charger - brouhaha - 10-16-2014, 03:30 AM
RE: HP 97 VERY hot charger - Katie Wasserman - 10-16-2014 09:31 PM
RE: HP 97 VERY hot charger - robert rozee - 10-17-2014, 02:06 AM

User(s) browsing this thread: 1 Guest(s)