Salas hotrodded blue DCB1 build - Page 204 - diyAudio
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Old 17th July 2012, 07:29 PM   #2031
BigE is offline BigE  Canada
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That is a good idea. I think the farnell's should work great.

Building an appropriate case is by far, the hardest part.
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Old 17th July 2012, 08:14 PM   #2032
DimZ is offline DimZ  Greece
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another dcb1 is ready ... (this one is for my brother) ...

measured :
1,82/1,98
9,68/9,71
0,3/0,6

once again .....
Salas

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Old 17th July 2012, 08:37 PM   #2033
BigE is offline BigE  Canada
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How much worse is orienting the fins horizontally instead of vertically? I'm not talking about the above photos, just a different way to do it.
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Old 17th July 2012, 08:39 PM   #2034
Salas is offline Salas  Greece
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Quote:
Originally Posted by DimZ View Post
another dcb1 is ready ... (this one is for my brother) ...

measured :
1,82/1,98
9,68/9,71
0,3/0,6

once again .....
Salas

How many did you score by now?
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Old 17th July 2012, 08:42 PM   #2035
DimZ is offline DimZ  Greece
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Quote:
Originally Posted by BigE View Post
How much worse is orienting the fins horizontally instead of vertically? I'm not talking about the above photos, just a different way to do it.
can't tell, but they are enough for this hotrod version..

I have mine with the same orientation almost a year now with no problems ...

model is : fischer sk68 sa 75

Quote:
Originally Posted by Salas View Post
How many did you score by now?
4 so far

Last edited by DimZ; 17th July 2012 at 08:44 PM.
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Old 17th July 2012, 08:53 PM   #2036
Renron is offline Renron  United States
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Dimz.
I'd bet the fins don't even work past the 2nd fin. (no offense meant) I'm glad they are working well for you, and that's what counts.


Quote:
Originally Posted by BigE View Post
How much worse is orienting the fins horizontally instead of vertically? I'm not talking about the above photos, just a different way to do it.
In that link I posted about the HS calculator, the author has some very good articles written about the functioning of HS.

Ron
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Old 17th July 2012, 09:06 PM   #2037
DimZ is offline DimZ  Greece
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Quote:
Originally Posted by Renron View Post
Dimz.
I'd bet the fins don't even work past the 2nd fin. (no offense meant) I'm glad they are working well for you, and that's what counts.

In that link I posted about the HS calculator, the author has some very good articles written about the functioning of HS.

Ron

I know about the orientation (Basic Theory / bottom of page) and you are right ,

still I think that fischer cant be wrong with their measurements and published data ...
and ofcourse it works ...
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Old 17th July 2012, 11:14 PM   #2038
Renron is offline Renron  United States
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DimZ,
I surely meant no disrespect to you. Again, I'm glad they work sufficiently for you.
What Fischer are you referring to? Edit; I see above.
Reading the application notes from you link, there is a figure of 70% effective, but that is with a heat source on the bottom, as it shows energy being radiated equally from both sides. Horizontal fin direction is rated at roughly 85%.
BigE asked the question, I was answering.

Now take Papa's F5 with the angled fins and that's a different story altogether.
Ron
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Last edited by Renron; 17th July 2012 at 11:37 PM.
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Old 18th July 2012, 03:04 AM   #2039
BigE is offline BigE  Canada
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I am thinking of this for the sides of the case. It will be mounted horizontally,

200x99x45mm Heatsink, Aluminum Heat-Sink, Heat Sink for LED, Power Transistor | eBay

If I can come up with a nice drawing, I'll post it before hand. Maybe even just scanned hand-drawn.
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Old 18th July 2012, 08:19 PM   #2040
BigE is offline BigE  Canada
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I got Teabags kit....

What sort of DC offsets can I expect? My power amp is DC coupled.
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