[ICOM] Internal Power Supplies

[Tom Norris]

On Jan 15, 2010, at 9:24 PM, Rich Arthur wrote:

> I have a two PS-35's and one PS-25...not working
> [snip]
> The supplies are difficult to work on..jammed into
> Tuna cans (hi, hi) with the PCB foil side down-under.


That's the odd thing about many switching power supplies,
there are many designs but few schematics available.  I've
not quite figured out what makes them so "proprietary," 
as many of the commercial brands will tell you if you try
to ask for a diagram.  

At least Icom can be sometimes talked out of diagrams for
some of their supplies if one asks nicely enough.  I have a
diagram for the PS-25.  I'll have to dig and see if I have one
for the other.

73

Tom Norris  NU4G