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Author Topic: Installing Kelmar AT-1200 reverse scan Tom Wienholt Master Film Handler Posts: 371 From: Towson, MD, USA Registered: Dec 2002 posted 05-09-2004 11:26 PM                     I recently purchased a wall wort transformer to use as a power supply for an LED reader. One of the wires is white and the other is white with a gray stripe on it. So which wire is the + and which is the - ?  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 05-10-2004 04:49 AM                        I usally plug the wall wart into the convenience outlet and then rewire that to the motor circuit so that it only comes on when the motor is running. Other ideas?  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 05-10-2004 05:55 AM                        quote: I recently purchased a wall wort transformer to use as a power supply for an LED reader. One of the wires is white and the other is white with a gray stripe on it. So which wire is the + and which is the - ? You can check polarity with a DC voltmeter.  |  IP: Logged

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