8 volt need from arduino uno

I made a project in the simulator proteus. In this project, I use Arduino Uno R3, an LCD monitor, a buzzer, a LED. I saw there is a need minimum volt and I use 5 bolt port but then the circuit is not working. So how can I get 8 or 10 volts from Arduino?

How were you connecting the 5V to UNO.

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zahid11ete:
I made a project in the simulator proteus.

Why are you asking here? Proteus is a commercial product - go ask their help desk.

Dry using a Dickson Charge Pump on a couple of PWM pins.

The vin pin is made to handle 12v.that's the max the Arduino can handle before it fries but it can handle a little more voltage like mane 14v.