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Old 12-24-2012, 08:07 AM   #16
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Reuse existing intercom wires for low voltage power source?


Not code compliant. Use DB9 connectors to attach the USB to the existing wiring. Intel's white paper on USB Drop & Droop http://www.otdl.com/VDROOP.PDF Do a search, you can find some info on building your own USB charging circuit, vs. trying to find a power supply that is non-compliant.

Still think that it is easier to just pull up the 120vac wiring and/or just lay the unit on a table to charge. As for question before, what are the docking stations & tablets that you plan on using for this?


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