[Amps] heat sinks

[Larry]

Manfred,

I've played with some "highly efficient" amps. Don't like the 
complexity. For me at least, simpler is better. I can throw together a 
simple inefficient AB linear in a heartbeat. Electricity is no problem 
as I am right next to Grand Coulee Dam, cheapest power in the world.

I've used up all the heat sink stock I've collected over the years, and 
since I no longer live where there are hamfests and salvage yards, I 
don't have an easy way to replace them.

Lucky for me a few of this lists members have come to my rescue and I 
may have enough available shortly to keep me going for a few more years.

And yes, I have found no supplier better than HeatsinkUSA.

Thanks & 73,

Larry - W7IUV



On 11/16/2018 12:39 PM, Manfred Mornhinweg wrote:
> 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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