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power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange
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19.5V 3.34A, Barrel 7.4/5.0mm With Pin, 3-Prong Fl F7970, 5U092, T2357, FF171, N2765, ADP-65JB B Dell Common Item (Dell) AC Adapter- Laptop. PcHub.com - Laptop parts , Laptop spares , Server parts
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45W AC Adapter Laptop Charger Compatible for Dell Inspiron 15 3000 5000 7000 Series 14-5000 13-7000 13-5000 17-7000 11-3000 3583 3593 5100 5570 5558 5559 Series Dell Computer Power Supply Cord
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