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Old 17th November 2012, 10:59 PM   #2871
labjr is offline labjr  United States
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The FETs are even closer! I think they need to be 4-5 inches apart?
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Old 17th November 2012, 11:39 PM   #2872
dantwomey is offline dantwomey  Canada
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Quote:
Originally Posted by labjr View Post
The FETs are even closer! I think they need to be 4-5 inches apart?
I prefer the first version as far as spreading the heat out.

Regards,
Dan
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Old 18th November 2012, 12:57 AM   #2873
labjr is offline labjr  United States
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Originally Posted by dantwomey View Post
I prefer the first version as far as spreading the heat out.

Regards,
Dan
The distance between FETs appears to be about 3/4 inch or about 20-22mm. Way too close in my book.

And F6 bias is set even higher than the F5. So will run hot.
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Old 18th November 2012, 01:14 AM   #2874
lhquam is offline lhquam  United States
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It is probably desirable to go with a PCB layout that works with the universal mounting standard so thaqt experimenters can use existing chassis and heatsinks.

I didn't follow that advice with by Teaser-6 layouts, primarily because I could not locate a cheap fabricator for prototype quantity PCBs of the needed board dimensions.
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Old 18th November 2012, 01:15 AM   #2875
CeeVee is offline CeeVee  Portugal
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F6 Amplifier
Quote:
Originally Posted by alex mm View Post
...... or this one could be better I give it a try tomorow , I'm now....
Alex.
Naaah,ZM's comment shook you.

This will not fly, first version can evolve...in my humble opinion.
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Old 18th November 2012, 03:28 AM   #2876
Nelson Pass is offline Nelson Pass  United States
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Originally Posted by alex mm View Post
...... or this one could be better I give it a try tomorow , I'm now....
Alex.
Nice board.

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Old 18th November 2012, 06:22 AM   #2877
permaneder is offline permaneder  Germany
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Quote:
Originally Posted by Nelson Pass View Post
Nice board.


...and here is one more proposal...
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File Type: jpg F6.jpg (636.3 KB, 487 views)
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Old 18th November 2012, 07:03 AM   #2878
alex mm is offline alex mm  Romania
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Quote:
Originally Posted by Nelson Pass View Post
Nice board.

.....PCB rev 4.0
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File Type: jpg F6 REV4.0 PCB ALL.jpg (619.8 KB, 472 views)
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Old 18th November 2012, 09:51 AM   #2879
slr 5000 is offline slr 5000  Australia
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yes yes
circuit board porn!!!!
my soldering fingers are getting randy
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Old 18th November 2012, 10:14 AM   #2880
CeeVee is offline CeeVee  Portugal
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Yes !!! looking good lx
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