View Single Post
  #10   Report Post  
Posted to sci.electronics.repair,sci.electronics.design
n cook n cook is offline
external usenet poster
 
Posts: 1,220
Default Opinions on adding fuses to power amp

Eeyore wrote in message
...


N Cook wrote:

The 2 reservoir caps are 6800uF, 80V rating with presumably about 65V on
each , when all is in working order.


That's a reasonable size. They won't be causing excessive switch on

current.

Is the power transformer toroidal or EI ? That's where the big difference

is.
Toroids will take a considerable switch-on current (it's largely due to

their
magnetic characteristics).

Graham


Toroidal , not E-I lamination transformer
I'm coming around to thinking 5 amp anti-surge in the mains fuse-holder and
a 5 amp fuse shunted in the + and - rail traces from the DC side of the
bridge rectifier before the reservoir caps, but undecided whether quick-blow
or anti-surge ones there.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/