Power supply

Hey,

probably a very stupid question :

Can i supply a higher Voltage to the power jack without damaging arduino ?? Let's say 10 V DC ?

Thanks Chris

It depends on which Arduino are you using. If you're using UNO, Duemilanove, Nano etc. you can use up to 12Volts on VIN pin

The UNO.

I mean, can i use a power adapter on the power jack that outputs lets say 10V ? And then access this voltage somewhere else, too ?

If you have UNO you can use 10V adapter with barrel jack and you can access this voltage on VIN pin on Arduino

This covered on the UNO hardware page.

The jack is connected to Vin and a regulator. The regulator provides the 5v to the rest of the board.