I´m thinking of buildning an Aleph 5 in a couple of months.
And I was thinking of buying 2 heatsinks from Conrad Heatsinks.
Would one MF35-151.5 be enough for one channel? (0.21 C/W)
I have seen 2 calculations: (this for 150W/channel and 23°C amb.temp.)
C/W x W + amb.temp. = 0.21 x 150W + 23 = 54.5°C
Or some formula at Conrad, with some correction factor K: (calculated for 30°C rise above ambient, K=1.33)
30/(1.33 x 0.21) = 107.4 W power dissipation.
for 150W there would be:
40/(1.24 x 0.21) = 153.6 W power dissipation.
In this case the heatsink temp. would be 40 + 23 = 63°C
Someone know wich one of these is the most likely?
And the transistors would be spread out over the heatsink...
Thanks
And I was thinking of buying 2 heatsinks from Conrad Heatsinks.
Would one MF35-151.5 be enough for one channel? (0.21 C/W)
I have seen 2 calculations: (this for 150W/channel and 23°C amb.temp.)
C/W x W + amb.temp. = 0.21 x 150W + 23 = 54.5°C
Or some formula at Conrad, with some correction factor K: (calculated for 30°C rise above ambient, K=1.33)
30/(1.33 x 0.21) = 107.4 W power dissipation.
for 150W there would be:
40/(1.24 x 0.21) = 153.6 W power dissipation.
In this case the heatsink temp. would be 40 + 23 = 63°C
Someone know wich one of these is the most likely?
And the transistors would be spread out over the heatsink...
Thanks
Have a look at Mark Finnis' Aleph 5. He uses similar heatsinks and hopefully his experiences will be a good guide for you.
Regards,
Dan
Regards,
Dan
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