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Old 16th January 2013, 12:37 AM   #51
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Keep a look out for free OPB PCBs
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Old 16th January 2013, 10:55 AM   #52
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Quote:
Originally Posted by AudioSan View Post
i'll take 2.
payment sent
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Old 16th January 2013, 07:34 PM   #53
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Rich, Arm, Paul, Walt, Iva your puppies are on their way enjoy
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Old 16th January 2013, 07:40 PM   #54
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Hi guys for now PCBs are all out other than my private collection please don't pay-pal . OPB will be next
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Old 17th January 2013, 04:40 AM   #55
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Nothing left for me? Well, maybe theres another batch but maybe not. Thats fine, not a big deal.
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Old 17th January 2013, 06:06 PM   #56
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Location: West Coast of Norway
One question..
Are we talking type1 or type2?

Notice that C1 (100u) has become C8 (220u) in type2. According to schematics at http://harrisonaudiolabs.com/Amplifiers/amplifiers.htm
C8 is not in the BOM btw.

Sincerely

Last edited by bambadoo; 17th January 2013 at 06:17 PM.
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Old 17th January 2013, 06:32 PM   #57
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Quote:
Originally Posted by bambadoo View Post
One question..
Are we talking type1 or type2?

Notice that C1 (100u) has become C8 (220u) in type2. According to schematics at HAL: Amplifiers
C8 is not in the BOM btw.

Sincerely
Type 2
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Old 17th January 2013, 06:37 PM   #58
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Thanks..
Sorry - something is wrong when importing your .xls BOM into google drive and that internal spreadsheet.... Som hickups here regarding parts..
Collecting both for Symef type2 and 1diffqc
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Old 17th January 2013, 06:41 PM   #59
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I am wondering how the output transistors will be mounted on the heatsink for this PCB.
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Old 17th January 2013, 06:43 PM   #60
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Quote:
Originally Posted by metal View Post
I am wondering how the output transistors will be mounted on the heatsink for this PCB.
TYPE 2

1. Place unpopulated PCB on heat-sink.
2. Use ink to mark the lead positions on the heat-sink.
3. Place transistors on heat sink with the pins bent straight up
4. Align the transistors leads with the ink marks
5. Use ink to mark the mounting holes of each transistor
6. Drill mounting holes
7. Mount transistors
8. Populate PCB
9. Place PCB over transistors
10. solder the transistors
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