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Chip Amps Amplifiers based on integrated circuits

Another way to connect LM3886
Another way to connect LM3886
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Old 30th November 2010, 12:27 PM   #1
jamal is offline jamal  Singapore
diyAudio Member
Join Date: Sep 2010
Default Another way to connect LM3886

I found this circuit and the grounding look very interesting.
Click the image to open in full size.

full story at LM3886 Gainclone 2x68 Watt Full Amplifier Project
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Old 30th November 2010, 02:05 PM   #2
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
Mixed AC and DC coupling.
Variable output offset.
Complex NFB.
Ambiguity in where decoupling is placed.
Pin 7 garbage fed to Signal Ground.
No RF filter.
No output Zobel.

Whoever drew this is either very clever or very stupid.

I would not risk copying it.
regards Andrew T.
Sent from my desktop computer using a keyboard
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