aluminum heatsink anodizing
in [Design]
|
Prev: Automotive Protection Circuit
Next: uav matlab model
From: Eeyore on 20 Dec 2008 08:02 John Fields wrote: > Eeyore <rabbitsfriendsandrelations(a)hotmail.com> wrote: > >Archimedes' Lever wrote: > >> > >> Having your already custom heat sink hard anodized does not add that > >> much to the cost of the part. > > > >I dare say not but it makes for a very heavy part for one. You can throw my PA > >assemblies to one other without danger of being injured. > > --- > First off you don't know the difference between conduction and > convection, Yes I DO. Convection is what happens with the type of central heating radiators we have here and amps like this. http://www.behringer.com/A500/?lang=ENG See the fins either side ? > and now you think that anodizing dramatically increases the > weight of a heat sink? NO, I said extruded heatsinks are considerably heavier than fabricated ones. And less efficient at transferring heat when using my design. The anodising is a non-issue. Graham
From: Michael A. Terrell on 20 Dec 2008 08:39 Eeyore wrote: > > How many of YOUR high power amplifiers are for sale in the shops and on ebay ? We've > made tens of thousands of them. Ebay? That surely speaks volumes about quality. Along with the used clothes, worn out tooling, and outright fraud. -- http://improve-usenet.org/index.html aioe.org, Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages. If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm There are two kinds of people on this earth: The crazy, and the insane. The first sign of insanity is denying that you're crazy.
From: John Devereux on 20 Dec 2008 09:29 "Michael A. Terrell" <mike.terrell(a)earthlink.net> writes: > Eeyore wrote: >> >> How many of YOUR high power amplifiers are for sale in the shops and on ebay ? We've >> made tens of thousands of them. > > > Ebay? That surely speaks volumes about quality. Along with the used > clothes, worn out tooling, and outright fraud. Yeah, all those old Tektronix scopes were clearly rubbish too. -- John Devereux
From: Michael A. Terrell on 20 Dec 2008 10:27 John Devereux wrote: > > "Michael A. Terrell" <mike.terrell(a)earthlink.net> writes: > > > Eeyore wrote: > >> > >> How many of YOUR high power amplifiers are for sale in the shops and on ebay ? We've > >> made tens of thousands of them. > > > > > > Ebay? That surely speaks volumes about quality. Along with the used > > clothes, worn out tooling, and outright fraud. > > Yeah, all those old Tektronix scopes were clearly rubbish too. A lot on Ebay are. They are dumped by cal labs becasue they aren't worth fixing. -- http://improve-usenet.org/index.html aioe.org, Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages. If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm There are two kinds of people on this earth: The crazy, and the insane. The first sign of insanity is denying that you're crazy.
From: John Devereux on 20 Dec 2008 10:53
"Michael A. Terrell" <mike.terrell(a)earthlink.net> writes: > John Devereux wrote: >> >> "Michael A. Terrell" <mike.terrell(a)earthlink.net> writes: >> >> > Eeyore wrote: >> >> >> >> How many of YOUR high power amplifiers are for sale in the shops and on ebay ? We've >> >> made tens of thousands of them. >> > >> > >> > Ebay? That surely speaks volumes about quality. Along with the used >> > clothes, worn out tooling, and outright fraud. >> >> Yeah, all those old Tektronix scopes were clearly rubbish too. > > > A lot on Ebay are. They are dumped by cal labs becasue they aren't > worth fixing. They still fetch good prices because they were fine examples of quality engineering. (And I don't think you will find many others around here who would disagree). -- John Devereux |