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Chip Amps Amplifiers based on integrated circuits

Bob Cordell's Super Gain Clone PCB (LM3886) and a stripped-down version: Compact3886
Bob Cordell's Super Gain Clone PCB (LM3886) and a stripped-down version: Compact3886
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Old 17th January 2020, 11:52 PM   #101
Mark Johnson is offline Mark Johnson  United States
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Bob Cordell's Super Gain Clone PCB (LM3886) and a stripped-down version: Compact3886
Please have a look at the "silk screen" lettering on the top side of the PCB. Its purpose is to help you know which layout footprint corresponds to a certain schematic component.

You can also treat the question as a recreational puzzle: figure out what goes where by gathering all the clues and then following them to a conclusion. For example ...

The schematic says that one of R18's legs is connected to LM3886 pin 3, and its other leg is connected to LM3886 pin 9.

Therefore we expect to find R18 somewhere close the LM3886. And indeed it is close! R18 is the very first component below the LM3886. See plot below.

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File Type: png position_of_resistor.png (8.4 KB, 133 views)
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Old 18th January 2020, 09:14 PM   #102
Dadbeh is online now Dadbeh  United States
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thank you for a very educational and useful response.
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