Monitor the camera if the power supply to him a large current, pay attention to the current is not the voltage, the voltage is 12V, then what will happen to the camera?
The current is very rare to see this situation, but the current is low, then I am sure that the monitoring head will appear like a pattern like interference
If the voltage is 12V has been determined. The current is determined. The current is determined by the DC impedance of the camera. If the voltage changes, the current will change. If the camera is shorted. That its voltage also changed!
The voltage is constant, the current is not increased, such as the camera comes standard with the adapter power supply is 12V / 1A, if the switch for 12V / 5A or 10A, 20A power supply is the same, will not have any impact on the camera. The actual operating current of the camera does not increase as the power of the power increases.
