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Old 10th September 2013, 12:46 PM   #1821
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Here's a mono-block of the L'amp v193. It's in the "lay-out" phase.

I'm still on the fence regarding using the heat sink pictured.
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Old 10th September 2013, 01:02 PM   #1822
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It does look a little small, unless it's an optical illusion thing.
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Old 10th September 2013, 01:18 PM   #1823
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Originally Posted by Michael Rothacher View Post
Anyone willing to loan me a thermal camera?
A regular camera will image it in the dark
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Old 10th September 2013, 01:36 PM   #1824
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Quote:
Originally Posted by Michael Rothacher View Post
It does look a little small, unless it's an optical illusion thing.
It sort of is an illusion because it's at an angle, plus the depth.
Anyway, it's at least as big or bigger than the heat sink on post #69.

It is machined for TO-03.
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Old 10th September 2013, 02:09 PM   #1825
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Quote:
it's at least as big or bigger than the heat sink on post #69.
I take that back. I'm not sure if it is bigger. Might have to track down a bigger sink.
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Old 10th September 2013, 05:12 PM   #1826
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A regular camera will image it in the dark
I just found out that participating Home Depot stores rent FLIR cameras, so I'll give that a try later. Thanks for the info.
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Old 10th September 2013, 05:37 PM   #1827
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Back from the gulf. No turtles, but I got to swim among a large school of "devil" manta rays.

Here's an opened 2SK82. 2 x 4mm dies. $25 for science.

Does open up unusual possibilites to cool the device .
  • Fashion dry ice into 1 inch circular pillars to fit in the open well and contact the base.
  • Drip de-ionized and distilled water in the well at a certain rate to a stable level without its overflow.
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Old 10th September 2013, 05:46 PM   #1828
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Quote:
Originally Posted by Michael Rothacher View Post
I just found out that participating Home Depot stores rent FLIR cameras, so I'll give that a try later. Thanks for the info.
That's good to know for a lot a reasons.
Insulting attic spaces soon.
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Old 10th September 2013, 06:36 PM   #1829
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Originally Posted by Michael Rothacher View Post
I just found out that participating Home Depot stores rent FLIR cameras, so I'll give that a try later. Thanks for the info.
Just in the case you are not familiar with these things, imaging shiny metal objects like 2sk82s, 28s or whatever gives improper temp readings due to low emisivity. Looking at TO3P (plastic) packages is 97% correct but shinny metal will need to be coated with something to get correct temp readings. I used to use white out correction fluid but, I've been using Cerameque thermal compund lately. It's basically that you get reflectivity from the shinny surface instead of emisivity. Generally you will see black or low temp indications on something you know is hot if you've got this problem. You can even get reflected emisive energy from a shinny object. Different surfaces have a different emisivity. You can probably google and find a chart, I couldn't find mine. Shinny metal is the worst offender
Don't forget to post pics here.
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Old 10th September 2013, 06:39 PM   #1830
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Good advice. Thank you, I'll try that.
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