UP BRIGHT D80-60 12v 5a Adapter Schematic Diagram and 2 Questions

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N11778

Joined Dec 4, 2015
176
1. What is the 85439 Chip it's an SMC 6 pins 0.125" Hi and 0.250" long and drives the inverter Q1 ?

2. Why is the small capacitor C12 connected between the hot side and the isolated side ?
 

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