[Amps] heat sinks

[Manfred Mornhinweg]

Larry,

my reply won't be the most helpful, but anyway:

Make a highly efficient amplifier. Then you don't need a huge heatsink.

Other than this, Heatsink USA is where I have bought heatsinks several 
times. Even from my location in Chile, with much more expensive 
international shipping, it was my best option.

Since then I have been collecting enough heatsinks from scrapped 
equipment to last for a while. Some huge ones come from a Siemens 
excitation control system for a big hydroelectric generator, and a big 
and very dense one, suitable for dissipating several kilowatts of heat 
with the help of a powerful blower, came from a Peltier chiller.

Maybe you can find some good big ones in industrial scrap yards. VVF 
drives for motors are massively used, rarely repaired when they fail, 
and the bigger ones often have rather large heatsinks in them.

Manfred

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