[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: (ET) charger failure question

I have had a case where an E15 secondary was dead; it's very hard to read the resistance since it is only a few ohms. Hook up new diodes and see if you get 42v dc out, then load it with the pack.
Blown diodes are annoying but not the end of the world. You can press new ones in if you pound the hole closed a bit before pressing them in. 

C


On 6/13/2017 12:46 PM, David Roden wrote:

I'm not a EE, but I don't see how a DC hit on the transformer secondary
would have much effect on the primary.  It would induce a pulse, but it'd 
be
of pretty short duration, and wouldn't have time to build up heat in the
primary.

Damage to the secondary is possible, I guess.  I'd expect the diodes to 
give
way (open up) first.  I could be wrong about that, though.

Anybody have an open GE charger handy and can measure the DC resistance of
the transformer secondary, so Michael can check his against yours?  I have 
a
charger here, but it's buried in the tractor.


David Roden - Akron, Ohio, USA

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
Note: mail sent to the "etpost" address will not reach me.  To send
me a private message, please use the address shown at the bottom
of this page : http://www.evdl.org/help/
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =




_______________________________________________
Elec-trak mailing list
Elec-trak cosmos phy tufts edu
https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak