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27th October 2004, 09:13 PM
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#1 |
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diyAudio Member
Join Date: Feb 2004
Location: Poland
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My LM3875 and LM3886 gainclone PCB’s
After few tests of the gainclone amplifier I decided to make my own PCB’s for it. On the pictures below you can see the results of my work.
PCB for LM3875 has its own double bridge, place for 2 x 1800uF/50V Panasonic FC, input and NFB capacitors. LM3886 PCB is a typical application circuit from the National Semiconductor note. The LM3875 topic was discuss so many times on this forum so I will just say: GC sounds GREAT! It was worth building a PCB for it 
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27th October 2004, 09:14 PM
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#2 |
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diyAudio Member
Join Date: Feb 2004
Location: Poland
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picture 2
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27th October 2004, 09:18 PM
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#3 |
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diyAudio Member
Join Date: Feb 2004
Location: Poland
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picture 3
LM3886 board. |
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27th October 2004, 09:27 PM
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#4 |
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Electrons are yellow and more is better!
diyAudio Member
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Nice work, indeed.
 I see also that you have use the same parts placement as I have done, power to the left. I think this is a good idea to keep power gathered at the left and signals at the right.
__________________
/Per-Anders (my first name) or P-A as my friends call me |
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27th October 2004, 09:28 PM
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#5 |
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diyAudio Member
Join Date: Feb 2004
Location: Poland
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And one more...
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27th October 2004, 09:44 PM
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#6 |
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diyAudio Member
Join Date: Feb 2004
Location: Poland
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Thank you Peranders
It’s easy when using a double layer PCB – top is for power and the bottom for signal tracks (excluding speaker output).
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27th October 2004, 10:28 PM
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#7 |
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diyAudio Member
Join Date: Dec 2003
Location: Columbia, SC
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Who did you have make your PCB? Mind if I inquire as to expense?
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28th October 2004, 04:05 PM
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#10 |
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diyAudio Member
Join Date: Feb 2004
Location: Poland
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Sorry – for now it’s impossible, maybe some day (now I’m a student) it will be a commercial project
 But I can send you a bottom side of the lm3886 board in pdf format if you want?
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Can you post the PCB
