The proposed addition of a note to use only a 3 amp power supply is not
really the best way to avoid PCB damage in case of a short. A three amp
supply (or most others unless designed to cut off if excessive current is
drawn) will supply as much power into a short as it is capable. So if the
traces are not vaporized they will still cook until power is removed.
This will result in raised traces, carbon paths in PCB's and in general
either ruining the PCB or making it unreliable. A fast acting fuse is much
better. One should always monitor current when applying power for the
first time.
Elecraft manuals are far better than the usual kit manual. Like the story
of the man who used his new ladder to climb to the roof of his barn and in
the winter set the ladder on a pile of frozen horse manure. All was fine
until the spring thaw and the then soggy manure caused the man to fall and
break a leg. He sued because the ladder manufacturer didn't warn him of
setting his ladder on a pile of horse manure. Since a large number of
first time or inexperience builders have sucessfully built Elecraft kits and
help is only an email away, it seems unnecessary to dumb-up the
instruction manuals.
(Before anyone gets the vapours, I am not calling anyone who has commented
on this thread a dummy)
73 Allen KA5N
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
