zevon8
New Member
If I remember correctly, the transistor would pass the "10 second test" with only one of those small heatsinks that look like an aluminum IC.
Of course you could just use a small 1 x 2 inch scrap of alluminum.
( the 10 second test is - can you touch it for 10 seconds without cursing )
for your fan, I dont think will need much of a heatsink, something like this will do:
https://www.futurlec.com/Heatsinks/TO220S.shtml
since at lower speeds, the transistor is not on all the time, so on average the heat production is lower.
If you go the LM317 route, you will need a heatsink, like above picture, being on all the time, heat production is steady.
Of course you could just use a small 1 x 2 inch scrap of alluminum.
( the 10 second test is - can you touch it for 10 seconds without cursing )
for your fan, I dont think will need much of a heatsink, something like this will do:
https://www.futurlec.com/Heatsinks/TO220S.shtml
since at lower speeds, the transistor is not on all the time, so on average the heat production is lower.
If you go the LM317 route, you will need a heatsink, like above picture, being on all the time, heat production is steady.