Adapter magsafe

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I would like to learn about more detail of circuit at magsafe connector side. It has flexible PCB and circuit on it. I don't know function of IC U1. It use to control LED at magsafe connector or cut current when battery full. Please help to advise me about more detail or method of circuit in flexible PCB. Thank you so much.

P1030988.JPG
 
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Your Mac's Specs
Way... way too many specs to list.
Even then you'd need more than just looking at the PCB / IC in a picture..
 

cwa107


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14" MacBook Pro M1 Pro, 16GB RAM, 1TB SSD

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