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Old 03-20-2009, 06:57 AM   #25
Manichean
Wizard
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Posts: 3,130
Karma: 91256
Join Date: Feb 2008
Location: Germany
Device: Cybook Gen3
Quote:
Originally Posted by EowynCarter View Post
the point with this is : if the charger provides to much, you risk breaking the Cybook. though a properly made charger will adapt to provide what it's asked for.
That's nonsense. It's not like the charger just "crams electricity down the throat" of the connected device (for lack of a better phrase), but rather the device that draws the current from the charger. The current given on the device is the maximum that the device draws when connected, the current on the charger is the maximum current the charger can supply before being overloaded ("overloaded" frequently translates to "it burns" in this context). So, the charger should have at least the same current specification as the device, its even better if it can supply more current than the device draws (think safety factor, although that is built-in). Obviously the voltage on both the charger and the device has to match.

Having said that, the USB specification call for devices to operate on 5 V and draw a maximum current of 500 mA, so in reality any USB charger works with the Cybook, since both confirm to USB specs.

Quote:
Originally Posted by EowynCarter View Post
On the other hand, if the Cybook tries to draw more than the charger can provide, it's the charger that might break.
This part is correct.

Quote:
Originally Posted by EowynCarter View Post
said bookeen's website :
AC 100~240V,
DC 5V 700mA
I think they're talking about the power supply that's part of the deluxe package. The Cybook itself draws 500 mA at 5 V, as stated on the label.

Last edited by Manichean; 03-20-2009 at 07:00 AM.
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