Hi,
Have ordered 4 boards from the diyaudio store to make a pair of Amp camp amps and was wondering where the UK people buy the heat sinks from? The rest will be ordered from digikey uk.
Thanks,Rob.
Have ordered 4 boards from the diyaudio store to make a pair of Amp camp amps and was wondering where the UK people buy the heat sinks from? The rest will be ordered from digikey uk.
Thanks,Rob.
My advice would be, if this is the first time building an amp enclosure then you will be much better off buying the chassis made for the amp.
If you are experienced building amplifier cases then I hope some one can provide some assistance with a local supplier.
If you are experienced building amplifier cases then I hope some one can provide some assistance with a local supplier.
Thanks I had a quick look at Farnell and rs a couple of nights ago I'll look properly tonight 🙂
Rob.
Rob.
Don't forget to look at the Temperature rise per Watt of the heatsinks and choose on the correct value.
If your amp produces say 50Watts, then your heatsink needs to be big enough to dissipate the heat.
Eg, this one AH50600V05000EE | Heatsink, 1.3degC/W, 127 x 100 x 31mm, Screw | RS Components is 1.3℃/W so if maximum temperature is 75℃ then this one is fit for up to 57Watts in free air.
If your amp produces say 50Watts, then your heatsink needs to be big enough to dissipate the heat.
Eg, this one AH50600V05000EE | Heatsink, 1.3degC/W, 127 x 100 x 31mm, Screw | RS Components is 1.3℃/W so if maximum temperature is 75℃ then this one is fit for up to 57Watts in free air.
If you want cooked outputs, that is the way to do it.
75Ctemp rise on the sinks= around 100C sink temp. And the output devices them self would be at a far far higher temp.
You do not want a temp rise of more then 35C.
75Ctemp rise on the sinks= around 100C sink temp. And the output devices them self would be at a far far higher temp.
You do not want a temp rise of more then 35C.
Thanks for the help and advice,
I've found 3 good candidates for my ACA's, all around 0.8 to 1.05C/W (The original article says around 1C/W so all should be good)
I'm just picking up all the bits over the next month or 2, need to build some subs before I start this project properly.
Cheers all,
Rob.
I've found 3 good candidates for my ACA's, all around 0.8 to 1.05C/W (The original article says around 1C/W so all should be good)
I'm just picking up all the bits over the next month or 2, need to build some subs before I start this project properly.
Cheers all,
Rob.
The ACA in the original article ran at a lower bias and
lower voltage (24V vs 19V) then the current version.
You should size up the heatsink accordingly.