[Amps] Heat spreader for solid-state amps

[Tom W8JI]

> Can you go too thick?  Thermally wise yes.  You want the 
> heat to get out of
> the unit.  That means passing it horizontally away from 
> the device and then
> vertically to the HEAT SINK then to moving air through the 
> heat sink.  The
> copper will heat quickly and retain heat past the time 
> your blowers are
> turned off.

I'm having a difficult time following the logic in that. I 
don't believe that point could ever be reached. It would 
require a fast-attack slow-decay copper.
The temperature rise time should be the same as the fall 
time. As long as cooling from radiation and air contact 
exceeds applied heat you are OK no matter how thick the 
copper gets.

73 Tom