A nitrous oxide system for an internal combustion engine includes a bottle containing pressurized nitrous oxide coupled to a nitrous oxide flow line, which is in fluid communication with an injection nozzle operatively coupled to the engine intake. An adapting white point corresponding to the pixel of interest is calculated based on the white point of the shooting condition and the information of the local white point. A fault signaling circuit is connected to the pre-sampling circuit and to the analog-to-digital converter for generating a fault signal when the numerical value of the externally generated analog signal is equal to the numerical value of the internally generated analog reference signal. Buffering, at a hypervisor of the replicated VM, traffic from VMs in the second cloud, wherein the buffering occurs when the first VM is activated and the replicated VM is paused. The alarm generates a signal and outputs it to display means arranged outside a power supply apparatus.