Heatsink

[Chad]

Noticed people are always asking about heatsinks. Here is a surplus one for $17 US. Too bad the fins don't go the other way but for $17, I guess we can't complain. If it is too tall for your project cut it in two and mount them side by side. Not sure how many they have. If anyone knows of any other good surplus deals please post them.

http://www.allelectronics.com/cgi-bin/category.cgi?category=100&item=hs-82&type=store
Chad

 

[Nelson Pass]

Good for about 50 watts.

 

[Chad]

Thanks Nelson, is that 50 watts for a class A -amp or any amp. I'm new at this hobby, I thought a class AB put out less heat allowing for a smaller heatsink.

 

[cp642]

Chad,
You can check out the heatsink thermal rating calculator at this website. I find it useful to have a rough estimation of thermal rating for my heatsinks.

http://sound.westhost.com/download.htm

 

[Nelson Pass]

Sorry, I meant 50 watts dissipation with the
fins vertical and 25 deg C. above ambient. This
would typically support a 100 watt AB amp used for
audio or a 20 watt class A amp.