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The third terminal is temperature sensor which charger recognises, not the camera.
So it should be OK to provide just +8V to camera..
Pay attention to switch, which is activated when battery is in place and the lid is closed, this may be your problem.
Having said that, I know that some mobile phones ( I used to work for NEC-A in mobile division) need to have resistor of specific value between GND and third terminal, so phone thinks it has battery inserted.
I think people have used power adapter with 400D without problems.
Last edited by bojan; 05-12-2009 at 07:59 PM.
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