Each magnetic sensor functions under the same principle, using the Lorentz force (F_M). When a charge is flowing through a conductor (wire or busbar), it corresponds to a certain amount of current. This current will be subjected to a perpendicular force (the Lorentz force) in response to a perpendicular magnetic field. This force will separate the positive and negative charges, creating a voltage that can be measured. This implies that the force is perpendicular to both the velocity (v) of the charge (q) and the magnetic field (B), following the direction of the right hand rule (as shown in figures 1 and 2). Looking into this equation, this also means that by fixing the force by having a certain voltage across the conductor, the current intensity can be deducted from the magnetic field perpendicular to the conductor plane. It is then the role of Allegro’s sensors to detect this magnetic field in different manners and correlate it to the corresponding current value (as shown in figure 3).