Where to look for ?
I want to get some to make a big heatsink cube for my next project.
If you have access to a school's metal shop, or another metal shop - you can make ur own heatsinks...
If you search back in this thread I spoke about doing just this.
I have done it, it works fine, better than any commercial heatsink I could buy in fact. Back about 15 years ago Nelson came out with the first Zen, I came out with a DC coupled SE amp... it ran about 120 watts in heat for about 30-35 watts of output... convection cooled. Got hot, but not that hot... so the heatsinks worked! 😀
_-_-bear
EDIT: for some reason the image link in the old post does not seem to work, even though the actual link has not changed... here it is: SE MoSFET Amp Image
Here's the link back in the thread: http://www.diyaudio.com/forums/pass-labs/121228-f5-power-amplifier-124.html#post1999802
If you search back in this thread I spoke about doing just this.
I have done it, it works fine, better than any commercial heatsink I could buy in fact. Back about 15 years ago Nelson came out with the first Zen, I came out with a DC coupled SE amp... it ran about 120 watts in heat for about 30-35 watts of output... convection cooled. Got hot, but not that hot... so the heatsinks worked! 😀
_-_-bear
EDIT: for some reason the image link in the old post does not seem to work, even though the actual link has not changed... here it is: SE MoSFET Amp Image
Here's the link back in the thread: http://www.diyaudio.com/forums/pass-labs/121228-f5-power-amplifier-124.html#post1999802
Last edited:
This comes up every so often. There ARE some advantages to watercooling, mostly if you have the stuff around as you said or can get radiators or heater cores from an auto wrecking yard or used air conditioning equipment. Or if you have a fish pond..
There are various threads on the topic. One of the best is by Grey Rollins and is for an Aleph amp, which is also Class A, so the issues are the same . Search the forums for Water Cooling and I think that you will find it.
Most recent issue of QEX has an article on liquid cooling -- goes into the physics and engineering of an amateur radio satellite in which one side was incredibly hot, the other extremely cold.
for summer is not a bad idea ,
nice stuff http://www.aavidthermalloy.com/products/liquid/index.shtml
can I water cooled my tubes😛 ?
nice stuff http://www.aavidthermalloy.com/products/liquid/index.shtml
can I water cooled my tubes😛 ?
Last edited:
Hi Jackinnj,
what about your promised kits for F5, F3 amps & IRFPs... ? 😉
I just matched some IRFP's -- spoke with some reps at the bigger distributors and Vishay seems to have some inventory management issues. They are on allocation.
Will have F5 kits in September.
This seems to be a typical situation when the economy starts
to recover - lead times get stretched out, which is one reason
why we beef up inventory during recessions. The other
reason is that we can often get better pricing.
😎
Hi Nelson.We all know that P channel of IR parts have p channel distortion effect.Does Vishay IRFP9240 have p channel effect too?Thank you
Hi.I do not want P channel effect.I would buy Vishay IRFP9240 but i will not buy then.Because you say Vishay IRFP9240 also have p channel effect
Does Vishay and IR use same technology?I remembered that you said the other IRFP transistor manufacturers (not IR.harris fairchild samsung etc) produces p channel transistors that does not have p channel distortion.
The Toshiba's sound great here, The National Semi's are almost as good.
Vishay's and Int. Rectifier are the same...
you're making 2K++ amp , and you're talking about cheaper ways ?
considering bang for the buck , I'll not loose sleep about origin of my mosfets , as long they're genuine
anyway - look here :
Reno HiFi
maybe that will change perspective of what's cheap and what's not expensive for your new toy .
and remember - most important thing is free - project ......
considering bang for the buck , I'll not loose sleep about origin of my mosfets , as long they're genuine
anyway - look here :
Reno HiFi
maybe that will change perspective of what's cheap and what's not expensive for your new toy .
and remember - most important thing is free - project ......