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Chip Amps Amplifiers based on integrated circuits

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Old 24th April 2006, 04:28 PM   #1
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Join Date: Jan 2005
Location: Argentina
Default PA100+Mauro Penassa

Hi!!!

I'm planning to build a 2xlm3886 paralell and I had this idea. Using the lm380N-strange-feedback that MP used in his circuit.

here is the idea.
Click the image to open in full size.

What do you think?

thanks
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Old 24th April 2006, 05:46 PM   #2
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Join Date: Sep 2005
Location: Melbourne Florida
Default Mauro Penassa design

Mauro used a variation of a national's feed forward error correction for the LM318 op amp with regenerative global feed back for the error correction and local negative feed back for the chip.
The LM 38-- series chips are not unity gain stable you will have to implement a local NFB loop at the chips either a cross comparision like Mauro or possible a looped T feed back across both chips.
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