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power supply - Why are some AC/DC adapters light while others are heavy? - Electrical Engineering Stack Exchange
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SUPERNIGHT AC 100-240V To DC 12V 2A 5.5x2.1mm DC Output Jack Power Supply Converter Adapter for 3528 5050 Led Light Strips - Walmart.com
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AC/DC POWER SUPPLY An alternating current (AC) is an electrical current whose magnitude and direction vary cyclically, as opposed to direct current (DC) - ppt video online download
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Amazon.com: ALITOVE AC 100-240V to DC 24V 5A Power Supply Adapter Converter with 5.5 x 2.1mm 2.5mm DC Output Jack for 5050 3528 LED Strip Module Light : Tools & Home Improvement
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Amazon.com: VSDISPLAY Power Adapter, AC 100-240V Input to 12V DC 2A Output, Power Supply, US Plug, with Plug 5.5x2.1 mm / 3.5x1.35 mm Fit SC24W-1202000U jhd-ap024u-120200ba-a, Fit for VSDISPLAY Controller Board :
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