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Old 01-12-2009, 01:26 PM   #11 (permalink)
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I wouldnt have thought the USB power ran through the regulator, for that very reason. I thought the regulator would only be for the 12v power.

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Old 01-13-2009, 09:07 AM   #12 (permalink)
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Quote:
Originally Posted by wagonman76 View Post
I wouldnt have thought the USB power ran through the regulator, for that very reason. I thought the regulator would only be for the 12v power.
USB is standard at 5V 500 mA. That can vary PC to PC, but those are the IEEE specs.
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Old 01-13-2009, 09:20 AM   #13 (permalink)
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I checked Kevins version of the schematic. The usb power does not use the regulator as wagonman indicated.
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Old 01-14-2009, 01:04 AM   #14 (permalink)
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What I do know is that the screen works when it is connected to the external power supply and does not work when I use the USB. My USB voltage output reading on two different computers is less than 5V so maybe I am just unlucky. The good news is the lower voltage did allow the software to be downloaded as everything works. It was frustrating getting everything to work but I learnt much in the process. Thanks for all the feedback I keep learning new things.

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