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![SOLVED] DC power jack polarity question - General Hardware Forum](https://content.spiceworksstatic.com/service.community/p/post_images/0000064776/54bf7add/attached_image/1.jpg "SOLVED] DC power jack polarity question - General Hardware Forum")
SOLVED] DC power jack polarity question - General Hardware Forum
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How to Identify Positive & Negative Wires: AC, DC, & More
ac dc - DC plug pins. Which is positive? - Electrical Engineering Stack Exchange
