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amp grease needed.


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82urq 
Member - Posts: 14
Member spacespace
Joined: May 17, 2004
Posted: April 12, 2007 at 10:35 PM / IP Logged  
Yes I got some today at Radio Shack they call it heat sink grease.
But the bacon grease sounds good too.
SoundAudio 
Copper - Posts: 242
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Joined: May 26, 2004
Location: United States
Posted: April 12, 2007 at 10:36 PM / IP Logged  
It is designed as an insulator and good heat conductor that is typically between the transistors and the heat sink mounting.  You'll see it on the side wlals of that amp because that is typically where the transistors of the power rails are connected to the heat sink.
Good Luck!
-Thad
jmelton86 
Gold - Posts: 1,228
Gold spacespace
Joined: February 07, 2007
Location: South Carolina, United States
Posted: April 12, 2007 at 11:06 PM / IP Logged  

Alright. So I can just put a thin coat over the transistor? Everyone I know (doesn't amount to anything, BTW) calls them 'preamps'. Put a thin coat on these to help dissapate heat?

Thanks

2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
haemphyst 
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Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: April 12, 2007 at 11:15 PM / IP Logged  
One question at a time:
1: Yes you can use it in CPU applications. I've been doing it for years, literally. There are actually some that have proven to be SLIGHTLY more effective at transferring heat - Arctic Silver is one, but the benefits are SO small, I can't personally justify the additional cost.
2: No, it is designed to go BETWEEN a heat pruducing device and a heatsink. It is specifically to fill in any (even microscopic) ridges, gaps, scratches, etc., to promote heat transfer from the hot side (the device) to the cooler side (the heatsink). You shouldn't ever just glob it on a device... It won't do anything there, except male a mess...
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
jmelton86 
Gold - Posts: 1,228
Gold spacespace
Joined: February 07, 2007
Location: South Carolina, United States
Posted: April 12, 2007 at 11:59 PM / IP Logged  

Awesome. You're the man.

So it, by itsself, isn't a heat-sink? It is just a 'heat-conductor' for in between the hot surface and actual heatsink and should only be used for this purpose?

Thanks, dude.

2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
jayem7516 
Member - Posts: 24
Member spacespace
Joined: April 09, 2007
Location: United Kingdom
Posted: April 13, 2007 at 8:39 AM / IP Logged  
jmelton86 wrote:

Awesome. You're the man.

So it, by itsself, isn't a heat-sink? It is just a 'heat-conductor' for in between the hot surface and actual heatsink and should only be used for this purpose?

Thanks, dude.

Note: You only need a very thin layer of the thermal 'grease' between the heatsink and whatever your attaching it to. A think layer will reduce heat transfer.
haemphyst 
Platinum - Posts: 5,054
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: April 13, 2007 at 10:05 AM / IP Logged  
Yes, it is a transfer device. It, in and of itself, has no "heatsinking" capabilites whatsoever. In thick applications, it can actually become an insulator, INCREASING the residual heat within the device.
Generally speaking a TINY dollop to the heatsink side of the device, and a reasonable screw tension is all that is necessary. There should be a LITLLE bit squeezed out, but not vey much at all. If you JUST see it, after tightening the fastener, that is the PERFECT amount.
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
jmelton86 
Gold - Posts: 1,228
Gold spacespace
Joined: February 07, 2007
Location: South Carolina, United States
Posted: April 16, 2007 at 5:38 PM / IP Logged  

I get it now. It's just there to make-up for the (even microscopic) gaps, ridges, scratches along the two surfaces.

Thanks, everyone.

2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
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