These are definitely my people
http://tangentsoft.net/elec/diy-hs.html
Bottom line: the paper clip beats the coins.
http://tangentsoft.net/elec/diy-hs.html
Bottom line: the paper clip beats the coins.
Ever try pieces of aluminum beer cans? You can cut (with siccors) and bend them to custom sizes and shapes.
Hmm..
are you sure that those are aluminium extrusions? They look a bit ...rusty. Steel perhaps? 😉 😀
are you sure that those are aluminium extrusions? They look a bit ...rusty. Steel perhaps? 😉 😀
Gee, i never knew aluminum angles were hot rolled.
Nice round edges, they even have a corroded hot roll skin.
The academic dime article is fun though.
Nice round edges, they even have a corroded hot roll skin.
The academic dime article is fun though.
No those are obviously steel, but when you search Google for "angle iron" that's what you're likely to get.
The paper clip idea is effective though, because it is "self adhering".
Read this before but forgot totally about it. It just solved my resister cooling problem. Thanks.
Read this before but forgot totally about it. It just solved my resister cooling problem. Thanks.
Yes, the beauty of the paperclip idea is that you can use a choice of clip sizes and bend the "fins" in whatever direction is convenient. I love it. Just make sure you have great thermal contact with the device.
I've used "fast-on" connectors wrapped around TO-92 transistors as heatsinks (to reduce thermal variation). Add a [solid] copper wire link between 2 of them for differential pairs, to keep them them [somewhat] thermally 'synchronized'.
I wonder what other household commodities we can use for DIY Audio applications that perform nicely as compared to commercial products.
..Todd
I've used "fast-on" connectors wrapped around TO-92 transistors as heatsinks (to reduce thermal variation). Add a [solid] copper wire link between 2 of them for differential pairs, to keep them them [somewhat] thermally 'synchronized'.
I wonder what other household commodities we can use for DIY Audio applications that perform nicely as compared to commercial products.
..Todd
jwb said:
How do you tell
Its hard to imagine with that little contact surface of the paper clips
The copper coins seems nice, but have to be grinded smooth to work
With the coins tho Im thinking that the insufficient cooling surface might just make heating issues worse, as its just holding back the heat, and dont remove it
Might be why paper clips seem to work better, as they still allow the heat to get away
🙄
It says, "naked transistor not yet tested", which to me makes conclusion pointless
Very easy to do a nice effective finger heatsink with any kind of metal sheet, be it alu, copper or what ever
As long as its stable enough to make proper contact
A proper heatsink still seems far more effective, so I really dont see the point, other than its fun
Seems to me he made the same conclusion, or maybe I dont understand it right ?
I once needed to improve a heatsink, so cut 1/4" aluminum wire on 3" peaces, stuck them between fins of the heatsink, and glued by epoxy. It looked like a hedgehog, but the temperature dropped down significantly.
Perhaps coins could give better results if hammered to more smoother and thiner surface. Thats easy. I have done it many times but never considered that it could make a heatsink. Not dure if it is cheaper w.r.t the quality.
I've used coins as heatsinks for some small bridge rectifier modules (those little tiny round ones). I just stuck them on with epoxy (JB weld,lol) and they worked great. I even built up a larger finned 'heatsink' with a stack of off-set pennies all epoxied together,much like in the picture. It actually worked quite well!
(Edit: I think the trick to using epoxy,is to use some that is meant for (and contains) metal.It probably has lower thermal resistance?! Just a thought.)
(Edit: I think the trick to using epoxy,is to use some that is meant for (and contains) metal.It probably has lower thermal resistance?! Just a thought.)
cbdb said:
To cool a TO-18 transistor. It worked, the trany didn't blow out as it did without the beer-sink.😀As for pennies, you need to get some old ones, pre-1980. They are solid copper. The new ones are only plated.
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